Well...Ad-Aware has not been on anyone's recommended list for some time...the major defense items are critical updates and if you are still sporting SP2 and think you are protected...or still using IE 6 or 7 and have the same illusions...are you beginning to see how it happens?
The point I'm trying to make is that there is a lot more to system defense...than a firewall...an AV program...and an antispyware/adware program.
I would suggest changing a few of your choices....everybody has favorites, so I'm not going to give you mine. Do the research, choose tools that you are comfortable with (and which do the job)...but it all starts with the basics.
Example: Adobe Flash Player comes out with updates all the time and users ignore the real implications that...not installing the most current version of FP makes their systems more vulnerable.http://www.bleepingcomputer.com/virus-remo...e-security-tool
. If you read the first section of this link, you will find out how it probably made its way onto your and other systems.