Ad Aware problem

I am going to boot it off my system at work. [!]

The computer takes over half an hour to "come up" . The main culprit seems to be aawservices.exe.
There must be other options that do the same job.
Any ideas / advice??

I used to run spybot with no problems. Found it caught some things that adaware did not.
Don't have either now with ESET smart security (from chillisoft) although I do think some things sneak through their security too. Not perhaps viruses, but I do find miscellaneous ads appearing after I visit sites. For instance, I'm getting a lot of pop-up ads from a site that allows them, for Chevrolet Cruze's and have only been getting these since I looked at one on Sella. Suggests tracking cookies, which spybot and ad aware used to catch.

We used to use all the freebies (ad aware/spybot etc) but got a trial run of Norton with the new computer. Seemed very effective so we paid to keep it. I doubt it gets everything but it cleans out most tracking cookies and has alerted me to viruses trying to enter as well. Worth the money in my book - I got sick of having to constantly clean out the rubbish manually. In saying that I still check every couple of months to make sure it is doing the job right!