Your submission could not be processed because a security token was invalid. If this occurred unexpectedly, please inform the administrator and describe the action you performed before you received this error. -- Well, I was clicking Mark Forums Read! :lol:
I posted an almost identical message a few months ago.. They just said I'd been logged in too long, but I'd just logged in, so idk. However, logging out and in again has the same effect of marking forums read ^.^