Doesn't do Daosearch

I've run Giant Antispyware a number of times now. Each
time I get a "clean" run, indicating there is no spyware,
I pull up my browser, only to find that daosearch has
once again inserted itself. No matter how many times
Giant cleans it off, it reappears. Obviously, Giant
isn't finding the original program file. Not a very good
recommendation. Anyone out there know how to defeat
Daosearch?