If you've been to many crack/warez sites you'd know firefox is just as bad as IE for spyware - not to mention most times I've ever gotten the shit it was bundled with a program I wanted and had nothing to do with my browser. I use Slysoft Ad-Aware, Spybot Seach & Destroy, System Mechanic and Trend Micro Housecall - and none of them (or all of them in combination) are capable of removing all spyware.