Hello, today i reinstalled windows and installed Kaspersky Internet Security 2013 first and then Malwarebytes Anti-Malware (from a cd which only contains the installer and was used at least 10 times without problems). During the installation of Malwarebyte, Kaspersky picked up a trojan. After the installation was complete, Malwarebytes updated itself as usually and reinstalled the updated version. During this Kaspersky found again a trojan. Normally i would say that this is a false positive but Kaspersky usually never picks up a trojan during the installation of Malwarebytes. Later i installed Kaspersky and Malwarebytes on a virtual machine and everything was fine, no trojan was detected there. This worries me cause this isnt a regular pick up by Kaspersky apparently. Here is what Kaspersky found: HEUR:Trojan-DOwnloader.Win32.Generic C:\Program Files (x86)\Malwarebytes' Anti-Malware\Chameleon\is-1KJ0O.tmp So is this a false positive that Kaspersky found apparently only this time or do i need to worry? Regards Raidr