I am not able to log out. I click the "log out" in the upper right of my screen, it says "logging you out....." but then the screen blinks and I'm right back (still) logged on. I don't have the box ticked that keeps me automatically logged in.

I tried going into My Stuff and clearing Cookies, but they don't clear. I emptied the Cache of my computer, but nothing works. This has only been an issue since yesterday.
I'm on an Apple if that means anything as far as what I can do. It's not that big of a deal, but still...

Thanks.