DragonLancer
Hero
Everytime I try to mark the forums as read, I get a message that I have an invalid security token and the action cannot be performed.
It works fine for me. What browser are you using? Have you cleared your cache lately? Are you using the "Mark this forum read" option under the "Forum Tools" menu from inside a forum, or something else?
"Mark Forums Read" = Invalid Security Token - vBulletin.org Forum
What style are you browsing the pages from?
I seem to recall that a while ago somebody complained about the same thing, and I'm guessing it just never got fixed.