Don't know how and when the system got infected. Ad-aware 2009 did not detect it and so did Zone Alarm 8 


Couple of days ago I found IE running in background with 50% CPU. No matter how many times I terminated, it would restart. So I changed the program name. That solved the problem but left IE non-functional. (It seems it was infected during that time.) Surprisingly ZA and Ad-Aware did not detect anything.
So now that this has happened I would like to ask is this antivirus/firewall and anti-spyware combination sufficient? Or I should change to something different?



Couple of days ago I found IE running in background with 50% CPU. No matter how many times I terminated, it would restart. So I changed the program name. That solved the problem but left IE non-functional. (It seems it was infected during that time.) Surprisingly ZA and Ad-Aware did not detect anything.
So now that this has happened I would like to ask is this antivirus/firewall and anti-spyware combination sufficient? Or I should change to something different?