Eh, I don't use anything. No antivirus, not any cleaners. I know what I download and I know site when I visit there. Using Intel i5 3570k 4,8Ghz with Noctua NH-D14, 1600Mhz DDR3 8GB ram, N560GTX-Twin Frozr 3 OC/PE version, 60Gb Kingoston SSD+500Gb 7200rpm HD.