I don't know whether this problem is being caused by IE8 or something within vBulletin. But I replaced all my files for another issue from the original package.
Basically when I sign in, I get the issue: Your session timed out while you were composing this post and you were logged out. You must log in again to continue. So I can't seem to post anything because it think I'm not logged in.
And yes, I have clean my history and all that too.
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