diff --git a/browser/base/content/browser.js b/browser/base/content/browser.js
index 37f5de130f33..7be6a14efc4d 100644
--- a/browser/base/content/browser.js
+++ b/browser/base/content/browser.js
@@ -1410,6 +1410,7 @@ function BrowserShutdown()
     .getService(Components.interfaces.nsIObserverService);
   os.removeObserver(gSessionHistoryObserver, "browser:purge-session-history");
   os.removeObserver(gXPInstallObserver, "xpinstall-install-blocked");
+  os.removeObserver(gMissingPluginInstaller.pluginCrashed, "plugin-crashed");
 
   try {
     gBrowser.removeProgressListener(window.XULBrowserWindow);
diff --git a/modules/plugin/Makefile.in b/modules/plugin/Makefile.in
index d1013d73f783..8a80364152ad 100644
--- a/modules/plugin/Makefile.in
+++ b/modules/plugin/Makefile.in
@@ -68,7 +68,7 @@ ifeq ($(OS_ARCH),OS2)
 TOOL_DIRS += default/os2
 endif
 
-ifdef PBBUILD
+ifdef PBBUILD_BIN
 ifeq ($(MOZ_WIDGET_TOOLKIT),cocoa)
 TOOL_DIRS += default/mac
 endif
diff --git a/toolkit/crashreporter/CrashSubmit.jsm b/toolkit/crashreporter/CrashSubmit.jsm
index cf723de7ea18..6be3ecf80f1d 100644
--- a/toolkit/crashreporter/CrashSubmit.jsm
+++ b/toolkit/crashreporter/CrashSubmit.jsm
@@ -273,8 +273,8 @@ Submitter.prototype = {
         this.element.removeChild(this.iframe);
         if (this.errorCallback) {
           this.errorCallback(this.id);
-          this.cleanup();
         }
+        this.cleanup();
         return 0;
       }
       // check HTTP status
@@ -283,8 +283,8 @@ Submitter.prototype = {
         this.element.removeChild(this.iframe);
         if (this.errorCallback) {
           this.errorCallback(this.id);
-          this.cleanup();
         }
+        this.cleanup();
         return 0;
       }
 
@@ -303,8 +303,10 @@ Submitter.prototype = {
   submit: function Submitter_submit()
   {
     let [dump, extra] = getPendingMinidump(this.id);
-    if (!dump.exists() || !extra.exists())
+    if (!dump.exists() || !extra.exists()) {
+      this.cleanup();
       return false;
+    }
     this.dump = dump;
     this.extra = extra;
     let iframe = this.document.createElementNS("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul", "iframe");
@@ -315,7 +317,8 @@ Submitter.prototype = {
       if (iframe.contentWindow.location == "about:blank")
         return;
       iframe.removeEventListener("load", loadHandler, true);
-      self.submitForm();
+      if (!self.submitForm())
+        self.cleanup();
     }
 
     iframe.addEventListener("load", loadHandler, true);
diff --git a/xpcom/threads/nsEnvironment.cpp b/xpcom/threads/nsEnvironment.cpp
index f6e348e122e2..55bbfac68790 100644
--- a/xpcom/threads/nsEnvironment.cpp
+++ b/xpcom/threads/nsEnvironment.cpp
@@ -137,7 +137,7 @@ nsEnvironment::Get(const nsAString& aName, nsAString& aOutValue)
  * vars. 
  */
 
-typedef nsBaseHashtableET<nsCStringHashKey,char*> EnvEntryType;
+typedef nsBaseHashtableET<nsCharPtrHashKey,char*> EnvEntryType;
 typedef nsTHashtable<EnvEntryType> EnvHashType;
 
 static EnvHashType *gEnvHash = nsnull;
@@ -178,7 +178,7 @@ nsEnvironment::Set(const nsAString& aName, const nsAString& aValue)
         return NS_ERROR_UNEXPECTED;
     }
 
-    EnvEntryType* entry = gEnvHash->PutEntry(nativeName);
+    EnvEntryType* entry = gEnvHash->PutEntry(nativeName.get());
     if (!entry) {
         return NS_ERROR_OUT_OF_MEMORY;
     }