Was on this forum yesterday and thought I should go to Youtube and check a few things out. Clicked on Youtube and WHAM!! A blue screen came up and said I have a virus, and it locked everything up. They gave me a phone number on the screen to call to remedy this situation. DON'T !!! I called my computer man and he said it is a scam.
To get rid of it is simple. Just hold the power button down on your computer for 10-15 seconds and it in most cased will unlock and virus will go away. (He said if you clicked on anything or followed the scammers directions, this will not work.)
By the way, this was called the Koobface virus.