you fool, you have viruses its just that Microsoft AV isn't detecting them!I like the Microsoft AV, I never get viruses, but then again I don't click on everything I see without reading.
I used msse too, and i read these AV reviews, installed AVG free, and then found out how many viruses i actually had. Use in combination with spybot S&D and Malwarebytes for regular scans they pick up the leftovers. Also run a rootkit remover once in a while.
Wow, what are you doing on your machine? I also only run Windows Defender with a malwarebytes scan on demand when I remember (once every couple of months maybe?). My machine has always been totally clean (although it's true that I don't do torrents or odd file-sharing). In fact, I don't think I've gotten a virus since I was running XP. That's cool that you run a bunch of 3rd party software; I just can't be bothered with the firewall-mucking, CPU-sapping commercial programs. Different strokes and all that.