I can sign in and see my summary, etc. but when I want to add to my watch list or place a bid, the sign-in screen reappears. When I sign in again, the sign-in screen reappears as if I haven't signed in properly - but with NO message about incorrect password or anything. The sign-in screen just reappears indefinitely so I can't actually add anything to my watch list or place a bid. When I use a different PC I don't get the issue. I am using the latest version of Firefox on a Windows XP machine.
