NOrton keeps detectomg gen.trojan something on activescan but nothings found on scan

Ls,

 

Active scan keeps popping up with a red barred messagesaying troyan.gen.32 has been dtected. On some file in c:\windows\kmsimulator.exe

File doesnt exist, but it might just have been removed.

In that case something else is dropping it because message keeps coming back.

Full scan finds nothing, Norton deep scan tool thingy finds nothing.

Whats up with that?

 

Regards,

 

Mac