I just updated and ran Ad Aware and found a trojan on my system. The ONLY way it could have gotten there was via something I already had installed. I don't download stuff from suspected websites and my security is so high that nothing can install itself without my permission.
Naturally, I'm suspecting Emerald.
Click on the link above. It will take you to a download of the free version. I suggest you run a smart scan if you just uninstalled Emerald.