A virus that targets all your files in the "My documents" folder, by encrypting & renaming the file with a .viCrypt extension.
As of now the only claimed solution is to download software called anticrypt or unvicrypt. These seem very suspicious and I would not download them. some claim that the software is made by the writers of the virus.
Symantec seems to be working on at least recognizing it, see the following link.
http://community.norton.com/norton/board/message?board.id=nis_feedback&thread.id=83056&view=by_date_ascending&page=4