I can’t seem to find an answer for this, so I may as well post here. I’m probably fucked, since I think I’m very nearly the most technical person who reads this damn thing, but hey, a man can dream.

For the last 6 months or so, I’ve been wholly unable to use the new builds of Firefox or Thunderbird. Either tool launches fine, and works great for its first run — but only that. If I quit and restart, the tool comes up fine, and even shows an appropriate window, but all the menus to the right of the application menu are gone, and keyboard shortcuts that would trigger functions from those menus are similarly impotent. Trashing the profile directory will make it work again, but that’s a bit too much of a PITA for me. I’m running Mac OS X (10.3.5), and I’ve observed no other weirdness.

Any advice?