Been using Microsofts new anti-spyware it finds minor threats, then I run Ad-aware it finds nothing always the same with these spyware removers- run three of them and all three will give different responses
You've failed to tell us what other precautions you have in place such as SpywareBlaster - if so, then all you have discovered is that they are doing their job and hence Ad-Aware's role has been minimised.
I use Search and Destroy, Ad-Aware, SpywareBlaster, ZoneAlarm and Avast! (all updated as required) and am on broadband which is operative for around 15 hours a day even if the system is perhaps not being used.
I've only had one nasty since switching from dialup in April and that was entirely my own fault.
I also use search & destroy as well as microsofts and adaware and am also on broadband (too much sometimes) and have found since using microsofts program my instances of spyware have decreased massively thou i use nortons 2004 firewall and anti-virus as well as Aols own spyware, only think that keeps me awake is cookies, which is way i use webroot window washer.