Yeah they don't advertise the free version as much now but its quick, auto updates and is light on the system resources compared to others.
Sorry to tell you, but BullGuard rocks. The best looking and accesible antivirus out there. Antivirus+Firewall+Spamfilter+Backup. Check out the BullGuard forum too.
I've been using avg free for years. freaking rocks - never had a problem with it. bjraines - here's the link http://free.grisoft.com/
AVG Free and the free microsoft antispyware tool. Changed to them years ago and haven't looked back! Good luck...
I think that Microsoft AntiSpyware (currently known as Microsoft Defender) was launched like about an year ago (and it still is beta).. You're using it for several years now ? you = Microsoft's Cutts ?
you are right microsoft antispyware was bought our from Giant Industries and is located at http://www.microsoft.com/athome/security/spyware/software/default.mspx