A lovely little virus is spreading around that claims that the police have
locked your computer because apparently you have been looking at unsuitable sites, piracy etc until you pay a sum of like 100 Ukash vouchers to unlock your computer. The virus is done in a clever way that leads you to think that you have been charged and all the police stuff. UKash themselves say that it is a scam and should you pay the sum of money proposed by these ugly scammers

they will go through measures to help you recover your stolen money. According to other people who obtained the virus and paid the sum of money, it does not unlock the computer.
This and other similar scams are common on normal sites like gumtree so no one is safe.
Just a friendly hint to anyone who experiences it -- I have just read about it today.
Has even one experienced this virus or any similar ones?