I have my PC set up for the Grimefighter to switch on evry week on a particular day and time, and so far it has worked a treat. Today it started off OK but then froze. I shut down the PC and re-booted. The sedation phase of the programme started off very well, and just as it was finishing, a message came through announcing it had encountered a problem and to visit the support.avast.com site. Up to yesterday when I performed a Quick Scan + clearance of the grime, everything seemed to be OK. Grateful for advice. Thanks - Francis