I rarely reboot my computer and I have a browser window containing TMC that remains open. This morning when I refreshed the page to update the forum status icons I was no longer logged in. I can't remember when was the last time I had to log in. Is there a timeout on the login cookie, or did the server lose some state last night?
Hmm... don't know for sure. I'm guessing no on the latter. The server does get periodically reset, but that doesn't force everyone to have to re-login.