I keep finding jhProtominer.exe running on my system sucking up all my cpu cycles. I kill the program in the taskmanager/processes, then search my system and delete all instances of this exe file (always in appdata/roaming folder) and remove all references to the program in my registry. Yet a few days later it is back again. Coming from where, I don't know.
Avast should remove and/or block this pernicious cycle stealer.