Anyone had a problem or know why it might happen with a user getting logged off while clicking through forums? I have a member complaining that its happening to him while browsing the forums.

I would recommend the member checking his cookie settings.. they have to be on in order for the page to "remember" them.

he's prolly switching from www to non www and the cookie domain isn't carrying forth..

there is a setting in your cpanel to always force them to www.. or you can be consistent in your urls and always use www or non-www for your board links..