My school/university/workplace/you'llneverknow has a proxy server because it's run by a horrible dictatorship. Almost every single time you navigate to a new page on the forum, you'll get logged out. There seems to be no real pattern but I've noticed: Using the yellow/orange bar for navigation tends to lead to less logouts. There's a better chance of a post being posted if the url is a link to a specific post eg: forums.uberent.com/magicthread#post.599magic It's infuriating.