Can't stay logged in

[Bahamnut]

I'm using Firefox 3, and for the past week or so, it refuses to keep me logged in to any website with an account and password. It'll usually keep the account name and password filled in, but whenever I leave the site and come back, I'm logged out again.

I've tried clearing cookies and resetting firefox to "factory" settings, but it's still doing it. Any ideas? It's a lot more annoying than it seems..

[Kenshiin]

I'm having this same problem at home however today I downloaded it for my work PC and it's remembering to keep me logged in. I tried to redownload it at home but I still get the same problems.