So I was being plagued by ZoneAlarm alerts for outbound DNS requests by an unknown process on a laptop. The offending process was procsystem.exe. A quick Google search didn’t reveal much, other than a few malware-related results. Some of them looked pretty nasty, but since there was only once process running in this case, it was easy enough to kill off. There was also a related ini file and a temp file.
As I say, this one didn’t require any external tools to pick up and clean, which is just as well as AVG, Adaware and Spyware Search & Destroy all missed it.