How often do you scan or computer for viruses and/or other risks?

[Nickelbackro]

Had McAffe and did a scan once per month, i hated it cuz the slowdowns with just the active defender on my machine was unbearable. Got Avira antvir for free and it found 3 Trojans, i was pissed, never using Mcaffe ever again. oh i also have spybot, and windows defender, and i keep them up to date, and i always keep my spybot's immunize feature up to date. plus i run Regsupreme registry cleaner and defrag once a week.