Recently, I have noticed files on my PC running Windows xp pro named "}" or "ht}" with no extension. These files contain detailed key stroke logs. I have run Norton Antivirus, PC-cillin and spybot sd. When running Norton, the app closes half way through the system scan. I can do a full system can in safe mode, but it finds nothing. I'm weary of doing anything on my PC. Any suggestions would be helpful. Thanks!