I use "remember Me", so I haven't encountered this.. I'll test it out in a bit ^^
Although, this did happen on anohter site and I think it has to do with the site link...
This is the link I have bookmarked:
http://www.tloag.com/forums/index.php
Maybe do a comparison of links?
EDIT: Tried it on Fire Fox and all seems to be ok, but you may want to try on the link you guys usually use first ^^