MyBB Community Forums

A website I help out has two MyBB forums. If you log into one forum, it will log you out of the other. This is a fairly annoying problem, since numerous users (including myself) like to view both forums. This means that if we make a post on the second forum, we have to log into the second one, then if we make a post in the first, we have to re-log in. I'd really like to see this changed!

What are the urls of both forums?

More than likely they never properly configured the cookie settings to allow for the two cookies to reside on the same domain.

this will fix your problem: http://wiki.mybboard.com/index.php/Cookies

I have multiple forums on the same domain and I have no problems when the cookie settings for each forum are set correctly