applyFilter() removed the GROUP_BY_FOLDER query option, because it doesn't really make sense when searching, and the backend errors out with it set. The problem is that after using applyFilter, there is no way to go back to the original state of the tree, short of seting the 'place' property again. Ideally, the backend would not choke with it set (bug 369657), and applyFilter wouldn't need to strip out the option.

I'm not likely to be able to work on these bugs anytime soon.

Grouping has been removed with bug 385245. This bug is invalid now, because it request fixing non existent code.

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