Strange problem when trying to use the forums: if I try to log in with Firefox (running under Windows XP), it doesn't seem to do anything. No login error message, the login screen just reloads with my name and password in the box and me not logged in.
Logging in with Internet Explorer 8 works fine and I can use the forums normally (as I am now). Logging in with Firefox on Linux also works fine, which is odd. I haven't bothered to try any other browsers yet. I have activated and deactivated addons to no noticeable effect.
It's very strange. Thought it was worth mentioning (while it's not a real problem for me personally, it could always be the symptom of something more insidious).