I had this problem yesterday and thought you should know about it. I am running ad-aware se pers Bld 1.06r1, I was cleaning up a machine that had many spy objects, trojans, etc on it. When I hit "virtumonde" ad-aware se caused the system to crash,"win xp home SP2","Blue screen" with Stop: C000021A {Fatal System Error} The windows logon process system process terminated unexpectedly with a status of 0x0000005 (0x000000 0x0000000). The system has been shut down. I had to run another product to remove it and also from memory. I like your product but thought you should be aware of this deadly issue.