Well, leap of faith, I went with the experienced knowledge and deferred my reservations..... Downloaded v1.51 of Gamebooster (having previously deleted all trace of 1.5) Checked the installer with MSSE and MBam, clear Installed, did not allow to auto-run, checked installation folder with both above again... Malwarebytes' Anti-Malware 1.46 www.malwarebytes.org Database version: 4404 Windows 6.1.7600 Internet Explorer 8.0.7600.16385 07/08/2010 22:12:09 mbam-log-2010-08-07 (22-12-09).txt Scan type: Quick scan Objects scanned: 54 Time elapsed: 3 second(s) Memory Processes Infected: 0 Memory Modules Infected: 0 Registry Keys Infected: 0 Registry Values Infected: 0 Registry Data Items Infected: 0 Folders Infected: 0 Files Infected: 0 Memory Processes Infected: (No malicious items detected) Memory Modules Infected: (No malicious items detected) Registry Keys Infected: (No malicious items detected) Registry Values Infected: (No malicious items detected) Registry Data Items Infected: (No malicious items detected) Folders Infected: (No malicious items detected) Files Infected: (No malicious items detected) So it seems it was a false positive - Well at least I got one thing right, the forum area Thanks nosirrah, faith restored in gamebooster.