I started up my computer on line this morning, only to get a message apparently from Interpol, the Met Police and various other bodies, informing me that I had been viewing kiddy porn, spamming and various other computer offences. My computer had been locked and would only be unlocked if I paid a £100 fine. I rang up my local police station to ask about this and they confirmed it was a known scam. It was impossible to remove the message as it completely filled the screen and stopped you accessing anything else. Fortunately my virus checker eventually detected the problem and removed the virus. If you get anything like this do not pay anything!