Yep fixed for me too now on Windows 7/Firefox

I too assumed it was just me :)

Although logging out has been sorted for me, every now and again, I get difficulties when trying to type anything, as the keyboard seems to 'freeze' whilst I'm trying to type. This is only an intermittent thing, and it never happens on other sites; when it happened the first time, I thought the issue was with my IPad! Perhaps I'll treat it like a PC; turn it off and back on again! Maybe it's just mine?