I have iMac 21.5", and it came with Snow Leopard installed by default. That's fine, but I was eligible for free Lion update, which I did.
Now I can't get my F8 key to work as a ... well, F8 key. It's constantly bound to showing Mission Control screen. I have checked in System preferences and there is no key binding to this action.
It drives me crazy already, because I need this key for deleting files in Midnight Commander through SSH connection.