When I use a key I have to wait 3 secs (yes, I counted) for whatever letter or number to appear on screen. I know that the computer knows I am using the keyboard because if I press numlock for long enough, I get the message that you get when you press the numlock key for 5 seconds. I have checked the control panel, and my settings in ease of control all checks out (I have everything off, including filter keys). I know as a matter of fact that, although I've only had this problem since this morning, it is unrelated to any setting changes, because I've done a system restore to 2 days back.