diff --git a/camino/src/bookmarks/BookmarkImportDlgController.h b/camino/src/bookmarks/BookmarkImportDlgController.h
index 4527a9bb73d..ccfb4ffe12a 100644
--- a/camino/src/bookmarks/BookmarkImportDlgController.h
+++ b/camino/src/bookmarks/BookmarkImportDlgController.h
@@ -43,6 +43,9 @@
   IBOutlet NSPopUpButton* mBrowserListButton;
   IBOutlet NSButton* mCancelButton;
   IBOutlet NSButton* mImportButton;  
+  IBOutlet NSProgressIndicator* mImportProgressBar;  
+  IBOutlet NSView* mImportView;  
+  IBOutlet NSView* mProgressView;  
 }
 
 -(void) buildAvailableFileList;
@@ -51,5 +54,6 @@
 -(IBAction) loadOpenPanel:(id)aSender;
 -(IBAction) nullAction:(id)aSender;
 -(void) alertSheetDidEnd:(NSWindow *)sheet returnCode:(int)returnCode contextInfo:(void *)contextInfo;
+-(void) finishThreadedImport:(BOOL)success fromFile:(NSString *)aFile;
 
 @end
diff --git a/camino/src/bookmarks/BookmarkImportDlgController.mm b/camino/src/bookmarks/BookmarkImportDlgController.mm
index 904d392939e..f595b2bbddf 100644
--- a/camino/src/bookmarks/BookmarkImportDlgController.mm
+++ b/camino/src/bookmarks/BookmarkImportDlgController.mm
@@ -47,11 +47,14 @@
 
 -(void) tryAddImportFromBrowser: (NSString *) aBrowserName withBookmarkPath: (NSString *) aPath;
 -(void) tryOmniWeb5Import;
--(void) buildButtonForBrowser:(NSString *) aBrowserName withObject:(id)anObject;
+-(void) buildButtonForBrowser:(NSString *) aBrowserName withPathArray:(NSArray *)anArray;
 -(NSString *) getSaltedBookmarkPathForProfile: (NSString *) aPath;
--(void) beginImportFrom:(NSString *) aPath intoFolder:(BookmarkFolder *) aFolder;
--(void) beginOmniWeb5ImportFrom:(NSArray *)anArray intoFolder:(BookmarkFolder *)aFolder;
--(void) finishImport:(BOOL)success fromFile:(NSString *)aFile intoFolder:(BookmarkFolder*)aFolder;
+-(void) beginImportFrom:(NSArray *)aPath withTitles:(NSArray *)anArray;
+-(void) beginOmniWeb5ImportFrom:(NSArray *)anArray;
+-(void) finishImport:(BOOL)success fromFiles:(NSArray *)anArray;
+-(void) finishThreadedImport:(BOOL)success fromFiles:(NSArray *)anArray;
+-(void) showProgressView;
+-(void) showImportView;
 
 @end
 
@@ -61,8 +64,8 @@
 
 -(void) windowDidLoad
 {
+  [self showImportView];
   [self buildAvailableFileList];
-  [[self window] center];
 }
 
 // Check for common webbrower bookmark files and, if they exist, add import buttons.
@@ -107,7 +110,7 @@
   NSFileManager *fm = [NSFileManager defaultManager];
   NSString *fullPathString = [aPath stringByStandardizingPath];
   if ([fm fileExistsAtPath:fullPathString]) {
-    [self buildButtonForBrowser:aBrowserName withObject:fullPathString];
+    [self buildButtonForBrowser:aBrowserName withPathArray:[NSArray arrayWithObject:fullPathString]];
   }
 }
 
@@ -131,7 +134,7 @@
   }
   if ([haveFiles count] > 0)
   {
-    [self buildButtonForBrowser:@"OmniWeb 5" withObject:haveFiles];
+    [self buildButtonForBrowser:@"OmniWeb 5" withPathArray:haveFiles];
   }
 }
 
@@ -153,13 +156,13 @@
   return nil;
 }
 
--(void) buildButtonForBrowser:(NSString *) aBrowserName withObject:(id)aThingy
+-(void) buildButtonForBrowser:(NSString *) aBrowserName withPathArray:(NSArray *)anArray
 {
   [mBrowserListButton insertItemWithTitle:aBrowserName atIndex:0];
   NSMenuItem *browserItem = [mBrowserListButton itemAtIndex:0];
   [browserItem setTarget:self];
   [browserItem setAction:@selector(nullAction:)];
-  [browserItem setRepresentedObject:aThingy];  
+  [browserItem setRepresentedObject:anArray];  
 }
 
 // keeps browsers turned on
@@ -175,22 +178,18 @@
 
 -(IBAction) import:(id)aSender
 {
-  // XXX show a spinner, disable the button, postpone to next event loop (to give UI time to update)
   NSMenuItem *selectedItem = [mBrowserListButton selectedItem];
-  BookmarkFolder *importFolder = [[[BookmarkManager sharedBookmarkManager] rootBookmarks] addBookmarkFolder];
   NSString *titleString;
   if ([[selectedItem title] isEqualToString:@"Internet Explorer"])
-    titleString = [[NSString alloc] initWithString:NSLocalizedString(@"Imported IE Favorites", @"")];
+    titleString = [NSString stringWithString:NSLocalizedString(@"Imported IE Favorites", @"")];
   else
-    titleString = [[NSString alloc] initWithFormat:NSLocalizedString(@"Imported %@ Bookmarks", @""), [selectedItem title]];
-  [importFolder setTitle:titleString];
-  [titleString release];
+    titleString = [NSString stringWithFormat:NSLocalizedString(@"Imported %@ Bookmarks", @""), [selectedItem title]];
   // Stupid OmniWeb 5 gets its own import function
   if ( [[selectedItem title] isEqualToString:@"OmniWeb 5"] ) {
-    [self beginOmniWeb5ImportFrom:[selectedItem representedObject] intoFolder:importFolder];
+      [self beginOmniWeb5ImportFrom:[selectedItem representedObject]];
   }
   else {
-    [self beginImportFrom:[selectedItem representedObject] intoFolder:importFolder];
+    [self beginImportFrom:[selectedItem representedObject] withTitles:[NSArray arrayWithObject:titleString]];
   }
 }
 
@@ -207,75 +206,56 @@
                                          types: array];
   if (result == NSOKButton) {
     NSString *pathToFile = [[openPanel filenames] objectAtIndex:0];
-    BookmarkFolder *importFolder = [[[BookmarkManager sharedBookmarkManager] rootBookmarks] addBookmarkFolder];
-    [importFolder setTitle:NSLocalizedString(@"Imported Bookmarks",@"Imported Bookmarks")];
-    [self beginImportFrom:pathToFile intoFolder:importFolder];
+    [self beginImportFrom:[NSArray arrayWithObject:pathToFile] 
+               withTitles:[NSArray arrayWithObject:NSLocalizedString(@"Imported Bookmarks",@"Imported Bookmarks")]];
   }
 }
 
--(void) beginOmniWeb5ImportFrom:(NSArray *)anArray intoFolder:(BookmarkFolder *) aFolder
+-(void) beginOmniWeb5ImportFrom:(NSArray *)anArray
 {
-  [mCancelButton setEnabled:NO];
-  [mImportButton setEnabled:NO];
-  
   NSEnumerator *enumerator = [anArray objectEnumerator];
-
+  NSMutableArray *titleArray= [NSMutableArray array];
   NSString* curFilename = nil;
-  
-  BOOL success = TRUE;
-  NSString *curPath;
-  while ( success && (curPath = [enumerator nextObject] ) )
+  NSString *curPath = nil;
+  while ( curPath = [enumerator nextObject]  )
   {
     curFilename = [curPath lastPathComponent];
     // What folder we import into depends on what OmniWeb file we're importing.
     if ([curFilename isEqualToString:@"Bookmarks.html"] )
     {
-      success = [[BookmarkManager sharedBookmarkManager] importBookmarks:curPath intoFolder:aFolder];
+      [titleArray addObject:NSLocalizedString(@"Imported OmniWeb 5 Bookmarks", @"Imported OmniWeb 5 Bookmarks")];
     }
     else if ([curFilename isEqualToString:@"Favorites.html"] )
     {
-      BookmarkFolder *favoriteFolder = [aFolder addBookmarkFolder];
-      [favoriteFolder setTitle:NSLocalizedString(@"OmniWeb Favorites", @"OmniWeb Favorites")];
-      success = [[BookmarkManager sharedBookmarkManager] importBookmarks:curPath intoFolder:favoriteFolder];
+      [titleArray addObject:NSLocalizedString(@"OmniWeb Favorites", @"OmniWeb Favorites")]; 
     }
     else if ([curFilename isEqualToString:@"Published.html"])
     {
-      BookmarkFolder *publishedFolder = [aFolder addBookmarkFolder];
-      [publishedFolder setTitle:NSLocalizedString(@"OmniWeb Published", @"OmniWeb Published")];
-      success = [[BookmarkManager sharedBookmarkManager] importBookmarks:curPath intoFolder:publishedFolder];
+      [titleArray addObject:NSLocalizedString(@"OmniWeb Published", @"OmniWeb Published")]; 
     }    
   }
-  
-  [mCancelButton setEnabled:YES];
-  [mImportButton setEnabled:YES];
-
-  // Non-rigorous reporting of errors
-  [self finishImport:success fromFile:curFilename intoFolder:aFolder];
+  [self beginImportFrom:anArray withTitles:titleArray];
 }
 
--(void) beginImportFrom:(NSString *) aPath intoFolder:(BookmarkFolder *) aFolder
+-(void) beginImportFrom:(NSArray *) aPathArray withTitles:(NSArray *)aTitleArray
 {
-  [mCancelButton setEnabled:NO];
-  [mImportButton setEnabled:NO];  
-  
-  BOOL success = [[BookmarkManager sharedBookmarkManager] importBookmarks:aPath intoFolder:aFolder];
-  
-  [mCancelButton setEnabled:YES];
-  [mImportButton setEnabled:YES];
-  
-  [self finishImport:success fromFile:[aPath lastPathComponent] intoFolder:aFolder];
-  
+  [self showProgressView];
+  NSDictionary *aDict = [NSDictionary dictionaryWithObjectsAndKeys: aPathArray, kBookmarkImportPathIndentifier, 
+    aTitleArray, kBookmarkImportNewFolderNameIdentifier, nil];
+  [NSThread detachNewThreadSelector:@selector(importBookmarksThreadEntry:)
+                           toTarget:[BookmarkManager sharedBookmarkManager]
+                         withObject:aDict];  
 }
 
--(void) finishImport:(BOOL)success fromFile:(NSString *)aFile intoFolder:(BookmarkFolder*)aFolder
+-(void) finishThreadedImport:(BOOL)success fromFile:(NSString *)aFile
 {
-  //show them the imported bookmarks if import succeeded
   if (success)
   {
-    [[self window] orderOut:self];
     BrowserWindowController* windowController = [(MainController *)[NSApp delegate] openBrowserWindowWithURL:@"about:bookmarks" andReferrer:nil behind:nil allowPopups:NO];
     BookmarkViewController*  bmController = [windowController bookmarkViewController];
-    [bmController setItemToRevealOnLoad:aFolder];
+    BookmarkFolder *rootFolder = [[BookmarkManager sharedBookmarkManager] rootBookmarks];
+    BookmarkFolder *newFolder = [rootFolder objectAtIndex:([rootFolder count] - 1)];
+    [bmController setItemToRevealOnLoad:newFolder];
   }
   else
   {
@@ -291,6 +271,8 @@
                       [NSString stringWithFormat:NSLocalizedString(@"ImportFailureMessage", @"The file '%@' is not a supported bookmark file type."), aFile]
                       );
   }
+  [[self window] orderOut:self];
+  [self showImportView];
 }
 
 -(void) alertSheetDidEnd:(NSWindow *)sheet returnCode:(int)returnCode contextInfo:(void *)contextInfo
@@ -298,4 +280,23 @@
   [[self window] orderOut:self];
 }
 
+-(void) showProgressView
+{
+  NSSize viewSize = [mProgressView frame].size;
+  [[self window] setContentView:mProgressView];
+  [[self window] setContentSize:viewSize];
+  [[self window] center];
+  [mImportProgressBar setUsesThreadedAnimation:YES];
+  [mImportProgressBar startAnimation:self]; 
+}
+
+-(void) showImportView
+{
+  [mImportProgressBar stopAnimation:self];
+  NSSize viewSize = [mImportView frame].size;
+  [[self window] setContentView:mImportView];
+  [[self window] setContentSize:viewSize];
+  [[self window] center];
+}
+
 @end
diff --git a/camino/src/bookmarks/BookmarkManager.h b/camino/src/bookmarks/BookmarkManager.h
index fe670d1b786..5d18dd8b42d 100644
--- a/camino/src/bookmarks/BookmarkManager.h
+++ b/camino/src/bookmarks/BookmarkManager.h
@@ -47,10 +47,12 @@
 @class KindaSmartFolderManager;
 
 extern NSString* const kBookmarkManagerStartedNotification;
-
 extern NSString* const kBookmarksToolbarFolderIdentifier;
 extern NSString* const kBookmarksMenuFolderIdentifier;
 
+extern NSString* const kBookmarkImportPathIndentifier;
+extern NSString* const kBookmarkImportNewFolderNameIdentifier;
+
 const int kBookmarksContextMenuArrangeSeparatorTag = 100;
 
 
@@ -142,7 +144,7 @@ const int kBookmarksContextMenuArrangeSeparatorTag = 100;
 
 // Importing bookmarks
 - (void)startImportBookmarks;
-- (BOOL)importBookmarks:(NSString *)pathToFile intoFolder:(BookmarkFolder *)aFolder;
+- (void)importBookmarksThreadEntry:(NSDictionary *)aDict;
 
 // Writing bookmark files
 - (void)writeHTMLFile:(NSString *)pathToFile;
diff --git a/camino/src/bookmarks/BookmarkManager.mm b/camino/src/bookmarks/BookmarkManager.mm
index d0968f08725..a5a043deb58 100644
--- a/camino/src/bookmarks/BookmarkManager.mm
+++ b/camino/src/bookmarks/BookmarkManager.mm
@@ -67,13 +67,20 @@
 NSString* const kBookmarkManagerStartedNotification = @"BookmarkManagerStartedNotification";
 
 // root bookmark folder identifiers (must be unique!)
-NSString* const kBookmarksToolbarFolderIdentifier      = @"BookmarksToolbarFolder";
-NSString* const kBookmarksMenuFolderIdentifier         = @"BookmarksMenuFolder";
+NSString* const kBookmarksToolbarFolderIdentifier              = @"BookmarksToolbarFolder";
+NSString* const kBookmarksMenuFolderIdentifier                 = @"BookmarksMenuFolder";
 
-static NSString* const kTop10BookmarksFolderIdentifier = @"Top10BookmarksFolder";
-static NSString* const kRendezvousFolderIdentifier     = @"RendezvousFolder";   // aka Bonjour
-static NSString* const kAddressBookFolderIdentifier    = @"AddressBookFolder";
-static NSString* const kHistoryFolderIdentifier        = @"HistoryFolder";
+static NSString* const kTop10BookmarksFolderIdentifier         = @"Top10BookmarksFolder";
+static NSString* const kRendezvousFolderIdentifier             = @"RendezvousFolder";   // aka Bonjour
+static NSString* const kAddressBookFolderIdentifier            = @"AddressBookFolder";
+static NSString* const kHistoryFolderIdentifier                = @"HistoryFolder";
+
+NSString* const kBookmarkImportPathIndentifier                 = @"path";
+NSString* const kBookmarkImportNewFolderNameIdentifier         = @"title";
+
+static NSString* const kBookmarkImportStatusIndentifier        = @"flag";
+static NSString* const kBookmarkImportNewFolderIdentifier      = @"folder";
+static NSString* const kBookmarkImportNewFolderIndexIdentifier = @"index";
 
 // these are suggested indices; we only use them to order the root folders, not to access them.
 enum {
@@ -111,6 +118,7 @@ enum {
 - (BOOL)importHTMLFile:(NSString *)pathToFile intoFolder:(BookmarkFolder *)aFolder;
 - (BOOL)importCaminoXMLFile:(NSString *)pathToFile intoFolder:(BookmarkFolder *)aFolder settingToolbarFolder:(BOOL)setToolbarFolder;
 - (BOOL)importPropertyListFile:(NSString *)pathToFile intoFolder:(BookmarkFolder *)aFolder;
+- (void)importBookmarksThreadReturn:(NSDictionary *)aDict;
 
 - (BOOL)readOperaFile:(NSString *)pathToFile intoFolder:(BookmarkFolder *)aFolder;
 
@@ -601,9 +609,14 @@ static BookmarkManager* gBookmarkManager = nil;
   return [mRootBookmarks itemWithUUID:uuid];
 }
 
+// only the main thread can get the undo manager.
+// imports (on a background thread) get nothing, which is ok.
+// this keeps things nice and thread safe
 -(NSUndoManager *) undoManager
 {
-  return mUndoManager;
+  if ([NSThread inMainThread])
+    return mUndoManager;
+  return nil;
 }
 
 - (void)setPathToBookmarkFile:(NSString *)aString
@@ -1466,39 +1479,104 @@ static BookmarkManager* gBookmarkManager = nil;
   [mImportDlgController showWindow:nil];
 }
 
-- (BOOL)importBookmarks:(NSString *)pathToFile intoFolder:(BookmarkFolder *)aFolder
+- (void)importBookmarksThreadEntry:(NSDictionary *)aDict
 {
-  // I feel dirty doing it this way.  But we'll check file extension
-  // to figure out how to handle this.
-  NSUndoManager *undoManager = [self undoManager];
-  [undoManager beginUndoGrouping];
-  BOOL success = NO;
-  NSString *extension =[pathToFile pathExtension];
-  if ([extension isEqualToString:@""]) // we'll go out on a limb here
-    success = [self readOperaFile:pathToFile intoFolder:aFolder];
-  else if ([extension isEqualToString:@"html"] || [extension isEqualToString:@"htm"])
-    success = [self importHTMLFile:pathToFile intoFolder:aFolder];
-  else if ([extension isEqualToString:@"xml"])
-    success = [self importCaminoXMLFile:pathToFile intoFolder:aFolder settingToolbarFolder:NO];
-  else if ([extension isEqualToString:@"plist"] || !success)
-    success = [self importPropertyListFile:pathToFile intoFolder:aFolder];
-  // we don't know the extension, or we failed to load.  we'll take another
-  // crack at it trying everything we know.
-  if (!success) {
-    success = [self readOperaFile:pathToFile intoFolder:aFolder];
+  NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+  BOOL success = TRUE;
+  int currentFile = 0;
+  NSArray *pathArray = [aDict objectForKey:kBookmarkImportPathIndentifier];
+  NSArray *titleArray = [aDict objectForKey:kBookmarkImportNewFolderNameIdentifier];
+  NSString *pathToFile; 
+  NSString *aTitle;
+  BookmarkFolder *topImportFolder = [[BookmarkFolder alloc] init];
+  BookmarkFolder *importFolder = topImportFolder;
+  
+  NSEnumerator *pathEnumerator = [pathArray objectEnumerator];
+  NSEnumerator *titleEnumerator = [titleArray objectEnumerator];
+
+  [self startSuppressingChangeNotifications];
+
+  while (success && (pathToFile = [pathEnumerator nextObject]) )
+  {
+    if (!importFolder)
+    {
+      importFolder = [[BookmarkFolder alloc] init];
+    }
+    
+    NSString *extension =[pathToFile pathExtension];
+    if ([extension isEqualToString:@""]) // we'll go out on a limb here
+      success = [self readOperaFile:pathToFile intoFolder:importFolder];
+    else if ([extension isEqualToString:@"html"] || [extension isEqualToString:@"htm"])
+      success = [self importHTMLFile:pathToFile intoFolder:importFolder];
+    else if ([extension isEqualToString:@"xml"])
+      success = [self importCaminoXMLFile:pathToFile intoFolder:importFolder settingToolbarFolder:NO];
+    else if ([extension isEqualToString:@"plist"] || !success)
+      success = [self importPropertyListFile:pathToFile intoFolder:importFolder];
+    // we don't know the extension, or we failed to load.  we'll take another
+    // crack at it trying everything we know.
     if (!success) {
-      success = [self importHTMLFile:pathToFile intoFolder:aFolder];
+      success = [self readOperaFile:pathToFile intoFolder:importFolder];
       if (!success) {
-        success = [self importCaminoXMLFile:pathToFile intoFolder:aFolder settingToolbarFolder:NO];
+        success = [self importHTMLFile:pathToFile intoFolder:importFolder];
+        if (!success) {
+          success = [self importCaminoXMLFile:pathToFile intoFolder:importFolder settingToolbarFolder:NO];
+        }
       }
     }
+
+    aTitle = [titleEnumerator nextObject];
+    
+    if (!aTitle)
+      aTitle = NSLocalizedString(@"Imported Bookmarks",@"Imported Bookmarks");
+    
+    [importFolder setTitle:aTitle];
+    
+    if (importFolder != topImportFolder)
+    {
+      [topImportFolder appendChild:importFolder];
+      [importFolder release];
+    }
+    
+    importFolder = nil;
+    currentFile++;
   }
-  [[undoManager prepareWithInvocationTarget:[self rootBookmarks]] deleteChild:aFolder];
-  [undoManager endUndoGrouping];
-  [undoManager setActionName:NSLocalizedString(@"Import Bookmarks", @"")];
-  return success;
+  
+  [self stopSuppressingChangeNotifications];
+  
+  NSDictionary *returnDict = [NSDictionary dictionaryWithObjectsAndKeys:
+    [NSNumber numberWithBool:success],kBookmarkImportStatusIndentifier,
+    [NSNumber numberWithInt:currentFile], kBookmarkImportNewFolderIndexIdentifier, 
+    pathArray, kBookmarkImportPathIndentifier,
+    topImportFolder, kBookmarkImportNewFolderIdentifier,
+    nil];
+  
+  [self performSelectorOnMainThread:@selector(importBookmarksThreadReturn:) 
+                         withObject:returnDict 
+                      waitUntilDone:YES];
+  // release the top-level import folder we allocated - somebody else retains it by now if still needed.
+  [topImportFolder release];
+
+  [pool release];
 }
 
+-(void)importBookmarksThreadReturn:(NSDictionary *)aDict
+{
+  BOOL success = [[aDict objectForKey:kBookmarkImportStatusIndentifier] boolValue];
+  NSArray *fileArray = [aDict objectForKey:kBookmarkImportPathIndentifier];
+  int currentIndex = [[aDict objectForKey:kBookmarkImportNewFolderIndexIdentifier] intValue];
+  BookmarkFolder *rootFolder = [self rootBookmarks];
+  BookmarkFolder *importFolder = [aDict objectForKey:kBookmarkImportNewFolderIdentifier];
+  if (success || ((currentIndex - [fileArray count]) > 0) )
+  {
+    NSUndoManager *undoManager = [self undoManager];
+    [rootFolder appendChild:importFolder];
+    [undoManager setActionName:NSLocalizedString(@"Import Bookmarks", @"")];
+  }
+    [mImportDlgController finishThreadedImport:success
+                                     fromFile:[[fileArray objectAtIndex:(--currentIndex)] lastPathComponent] ];
+}
+
+
 // spits out text file as NSString with "proper" encoding based on pretty shitty detection
 - (NSString *)decodedTextFile:(NSString *)pathToFile
 {