Verified answer

as often as possible

I always run it each night when I go to bed. I actually alternate between Spybot and AD Aware. They seem to find things that the other doesn't.

Depends on how messed up your computer is. Once a week should be fine if you dont normally find a lot of problems. Otherwise scan once a day if you are really having problems.

Also, you may need to manually remove things that keep coming back.

If you use Internet Explorer, I'd recommend using it every few days to a week. If you haven't already, I'd also check out Ad-Aware Personal. Its free and you can get it here: http://www.lavasoftusa.com/

if it takes a little time ...daily... if it takes a long time weekly..

what it does is basically delete cookies that slow down the computers and these cookies keep coming back...

or... run it every time it slows down... (but i reccomndweekly or daily)

I usually go for weekly.

you must use it twice a week to make sure.