Why does the arcade consistantly log me out?

[DeadJonas190]

Whenever I am playing a game for more than 10 minutes or so the arcade logs me out and then I can never post my score. For instance, I have played Defend Your Castle about 6 times and just got a score that would have given me 4th place, but due to the forums logging me out I lost it all.

::Edit::

While replying to a post in General Discussion about which concerts we have been to, I was logged out while typing my reply. Fun stuff.

[Neil]

Sounds very odd! How long were you typing that response for?

Are you using cookies?

Sure you computer/browser are OK?

[DeadJonas190]

It was a long response, but I don't think I was typing it for longer than 10 minutes. Cookies are allowed in my browser. I am going to play with some of the security settings and see if maybe it is the settings causing the problem as my computer/browser seems to be running just fine with everything else.