This happened to me the other day now too, for the first time. It wasn't a long post either, took no more than 2-3 minutes to compose, just a short paragraph.
Additionally, I've been having the problem of my browser's Back button occassionally not working. I'm using IE 7.xxx, under XP SP3. I can make it work if I click on it in rapid succession. This only happens occassionally, but it happened just now, which is why I'm posting this message.
The Back button problem I've experiences at other sites, albeit very rarely, but not the time-outs.
I've stopped surfing pR0n sites some time ago, so that's not the problem.
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