On one of my three installs of Firefox (well, Pale Moon, but Firefox) - all the same version (3.6.16) - the "details" panel in the Bookmarks Library refuses to persist open session to session. This was a known bug a bunch of versions back and was supposedly fixed at some point. There was (is) an add-on called Patch for Library that fixed this and a few other quirks, but that doesn't do it anymore (versions have marched on and I think it actually breaks some things now). I've even tried uninstalling and reinstalling to no avail, which makes me wonder if it could possibly be something amiss in the profile. Any ideas?
(Upgrading to 4.x - something I hesitate to do anyway as I don't like its UI, although I think the Pale Moon guy has a theme that skins it back to 3.x-like - is not an option at this point, as my can't-do-without CookieSwap add-on doesn't work with 4 yet. And no, I don't want to switch to Multifox to have something that works with 4 right now, for reasons I won't bore you with.)
(Upgrading to 4.x - something I hesitate to do anyway as I don't like its UI, although I think the Pale Moon guy has a theme that skins it back to 3.x-like - is not an option at this point, as my can't-do-without CookieSwap add-on doesn't work with 4 yet. And no, I don't want to switch to Multifox to have something that works with 4 right now, for reasons I won't bore you with.)