I'm on Firefox 2.0.0.16 myself and as reported earlier, I have frequently experienced the auto-logout myself. I usually don't shutdown my computer, but just let it suspend to RAM or to disk. With the old forums, I could be logged in with the same session for weeks. The only reason that I had to log out was because the functionality to show which posts are new and which you have already seen stopped working at some time.
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					Originally Posted by  S.R. Krol
					 
				 
				Okay, I just spent the past hour playing Space Invaders only to get to the end and find that my score wouldn't be saved!  That's when I realized that I was no longer logged in.  Is there a timeout for forum inactivity that would have caused that? 
			
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 I was getting the same when I've been playing some Arcade game for about 25 minutes. I logged in and used the back and refresh button a couple of times and luckily it registered the highscore that I reached after some time, even though it took a number of tries. You might have been able to save it.