All right, here's a strange one. If I'm using Firefox, I cannot log into either this forum or my blog's WordPress admin panel. When I try, I just get a fresh login screen. If I use Camino as browser, I have no problem logging in (I'm logged in now with Camino because Firefox won't allow it).
I've emptied Firefox' cache, deleted WordPress and my blog's cookies, deleted saved passwords, all to no avail. Firefox will not let me into anything WordPress. It will let me log into other sites. Any guesses?