We spend potentially a lot of time sending out observer notifications for image and other stuff that is marked hidden that is normally never seen. An observer should be able to specify whether it wants noficitations of hidden items so that the common case can be faster.

*** This bug has been marked as a duplicate of 325241 ***

Bug 451915 - move Firefox/Places bugs to Firefox/Bookmarks and History. Remove all bugspam from this move by filtering for the string "places-to-b-and-h". In Thunderbird 3.0b, you do that as follows: Tools | Message Filters Make sure the correct account is selected. Click "New" Conditions: Body contains places-to-b-and-h Change the action to "Delete Message". Select "Manually Run" from the dropdown at the top. Click OK. Select the filter in the list, make sure "Inbox" is selected at the bottom, and click "Run Now". This should delete all the bugspam. You can then delete the filter. Gerv