[mountainlion]

Waterfox seems to work good for the 64 bit system. I use AVG Free antivirus and Lorias anti Trojan. I can run both of them at the same time. Microsoft security essentials is also part of my defense. Mrt is also used. Windows Defender is shut off by AVG so I don't use it. I do get a not responding opening some pages form Microsoft security but it is not as bad with Waterfox.

[ShadowAce]

Wow. That’s a lot of cycles used to protect you from a badly designed OS.