I use- Windows Firewall, Avast Antivirus, Chrome browser. I disagree that disabling Avast doesn't turn it off. I would be happy to put you in touch with the Avast developers. I've had no problems with any hardware before or since. It was the only blue screen crash I ever experienced. It doesn't explain any of the behavior of the program eventually slowing down and freezing or the sync error interruptions when trying to upload. I'm on a high speed connection: 31 Mbps download/5 Mbps upload. This is the most unstable software I've dealt with in years, and I'm by no means a novice with computers. At any rate, if FTM2012 doesn't work under these conditions, it's not a program worth using.