Worms/Viruses/Trojans    
Trojan.FakeAV!gen36 Wed, Jul 21 2010
Severity 
Aliases: 
Infects: [Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows Vista, Windows XP]
Description:
Trojan.FakeAV!gen36 is a heuristic detection used to detect threats associated with the Trojan.FakeAV family.

Impact:
It prevents the user from accessing certain programs on the computer.

Propagation:
Not Available.

For Further Information:
http://www.symantec.com/norton/security_response/writeup.jsp?docid=2010-072108-3329-99&tabid=2
Solution:
Disable System Restore (Windows Me/XP).
Update the virus definitions of your antivirus product.
Run a full system scan.