Forgot a file for bug 423200 (for mak77@supereva.it, r=dietrich)

browser/components/places/src/nsPlacesTransactionsService.js

@@ -464,7 +464,13 @@ placesMoveItemTransactions.prototype = {
   },
 
   undoTransaction: function PMIT_undoTransaction() {
-    PlacesUtils.bookmarks.moveItem(this._id, this._oldContainer, this._oldIndex);
+    // moving down in the same container takes in count removal of the item
+    // so to revert positions we must move to oldIndex + 1
+    if (this._newContainer == this._oldContainer &&
+        this._oldIndex > this._newIndex)
+      PlacesUtils.bookmarks.moveItem(this._id, this._oldContainer, this._oldIndex + 1);
+    else
+      PlacesUtils.bookmarks.moveItem(this._id, this._oldContainer, this._oldIndex);
   }
 };