Places to be disabled on Trunk nightlies
Places will be disabled on trunk nightlies next Monday, September 25th, to revert the UI to the same state as Firefox 2 and to make the landing of the new Firefox theme easier.
If you are using nightly builds of Firefox from the trunk and would like to keep your bookmarks, you can export a bookmarks.html file by selecting Organize Bookmarks in the Bookmarks menu, and then selecting Export from the File menu in the organizer.