if you run a build built between between 2007-10-11 13:30 and 2007-10-12 20:45 and the run a newer build, you'll get another "Places" folder for details, see bug #399460 comment #22. I'm logging this bug for completeness.
marking wontfix, re-open if you disagree.
I don't disagree but "and the run" in the Summary ought to be "and then run". I don't have the privilege to edit this bug, so someone else will have to do it.
in bug #399460 mossop writes: > Ok this makes sense. And I don't think there is much value in going to > additional lengths to avoid it, we impact us nightly testers in a fairly minor > fashion. marking verified, based on that comment. If you, reed, ria, robert or anyone else gets an additional "Places" folder by some other method, please let me know.
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