Possible Solutions:
[1] Try running your up to date virus scanner and spyware scanners.
Recommended Scanners:
AVG 7.0 Anti-Virus
Ad-aware SE Spyware
Spybot Search & Destroy Spyware
CWShredder Spyware
[2] Try deleting this from SafeMode.
If the above recommendations do not resolve this issue, try this MSKB article:
http://support.microsoft.com/?id=kb;en-us;Q320081