Chris4 and felu, while you argue among yourselves... I think Patchou is right. This thread looks similarly like the virus which deletes a person's contact list. If you read the first post carefully it says "I didn't have time to use MsgPlusLive.net I just install it." meaning it was downloaded from another source.
gretoo: It looks like you've downloaded a virus, unfortunately there's nothing you can do about it. You may want to see
this thread for some more information.