Logout bug in 1.1.4

As before in version 1.1.3, there's a logout bug again. When people click on logout on my forum, they don't get logged out. It says they are, but they really arn't. Because when they go back to the index page, it says "Hey username...".

Anyone got a fix for this ?

Look at this thread:
http://www.vbulletin.com/forum/showthread.php?threadid=5773

There really isn't any reason to log out unless they are on a shared PC in a publicly accessible place.