When I try to log in with facebook it logs me out after a second or two. This is only with Firefox 4.0 and is a recent problem. No issue with Chrome. Cleared cookies, cache, ran firefox in safe mode to no avail. At first I thought it was all Facebook Connect sites since I was having trouble with Groupon's facebook auth as well but that seems to be resolved...so this might be xenforo specific? Edit: Tried it on my 1.0.0 install, same issue so it's not due to any recent changes here. Anyone else have this issue?