Hmm...Thanks for the heads up. I'll see what I can find out, and I'm sure I'll be able to eliminate the problem.
Have you noticed any kind of system to it? Certain users only? Certain browsers only? Certain users of certain ISPs only?
It was happening to me a couple of nights ago, using Firefox (latest version). I'll ask around and see what other folks are using. It has not happened to me since then, though. I'll update this if / when it happens again, and not delete the duplicate post until you can check it out.
D