Pooh, the face that he said Microsoft services and that it's an adware/spyware issue would have suggested it's a Windows device. AFAIK, there is no wide-spread *nix adware (yet!)
No. HiJackThis merely shows what's in the registry. CTRL+ALT+DEL might get you the TaskManager but often many processes are hidden from it's view. ProcessExplorer shows EVERYTHING. I've yet to see anything hide from it.I am almost positive you can do this with Hijackthis and ctrl alt delete tells most but yah that there should work for ya.