I run Avast, MBAM and SAS (free versions) scans daily and haven't had anything but a couple of false positives on Avast since I put this computer together, but today after installing the 1.51.1.1800 version of MBAM I had 9 infections: Registry Keys Infected: HKEY_CLASSES_ROOT\CLSID\{9869EFB4-18E9-11D3-A837-00104B9E30B5} (Trojan.Agent) -> Quarantined and deleted successfully. HKEY_CLASSES_ROOT\TypeLib\{9869EFA6-18E9-11D3-A837-00104B9E30B5} (Trojan.Agent) -> Quarantined and deleted successfully. HKEY_CLASSES_ROOT\CmdLineExt.CmdLineContextMenu.1 (Trojan.Agent) -> Quarantined and deleted successfully. HKEY_CLASSES_ROOT\CmdLineExt.CmdLineContextMenu (Trojan.Agent) -> Quarantined and deleted successfully. Files Infected: c:\Users\administrator\AppData\Local\Temp\cmdlineext01.dll (Trojan.Agent) -> Quarantined and deleted successfully. c:\Users\administrator\AppData\Local\Temp\SIntf32.dll (Trojan.Agent) -> Quarantined and deleted successfully. c:\Users\administrator\AppData\Local\Temp\SIntfNT.dll (Trojan.Agent) -> Quarantined and deleted successfully. c:\Windows\System32\cmdlineext03.dll (Trojan.Agent) -> Quarantined and deleted successfully. c:\Windows\SysWOW64\cmdlineext03.dll (Trojan.Agent) -> Quarantined and deleted successfully. Now nothing had come up in any of my other scanners, and apparently c:\Users\administrator\AppData\Local\Temp\cmdlineext01.dll had been on my computer since May without being flagged, is there a chance they could be false positives? Because if not I have no idea how I became infected, because I keep all my security and programs up to date, and I use Mozilla with Noscrpit.