I have a fairly old computer[Windows Millinium] with free ZoneAlarm,Avg, Spybot, Adaware, Registry First Aid, WinPatrol and Diskeeper Lite all free programs installed on my computer. I was getting frequent crashes and freezes using the Windows browser and since switching to Firefox I rarely encounter any problems. They should pay me for this testimonial, I feel I should be at an AA meeting. If I didn't have problems I wouldn't have changed.