Should i stop avast's malware function and windows defender from running since I installed Spybot?
Hello nelsonm. In fact, disabling them will make your computer even more vulnerable. Do not take Spybot-Search&Destroy's TeaTimer (Resident Shield) as a feature that will protect you from opening malicious files or that sorts. TeaTimer is real-time that will monitor critical areas of your registry (that is what makes it unique). avast! and Windows Defender have already given your computer protection and hardened it's defenses.
I only brought it up because of what most say about not having multiple anti-virus or firewalls up on the same computer. I thought that the spyware/malware components of - Avast, SpyBot and Defender - may conflict with each other.
Well, Spybot-Search&Destroy's Resident Shield is an exception. To make it clear, a anti-spyware and a anti-virus Resident Shield will not conflict, but two of the same types will increase the chances of conflicting.