I've made some observations about occasional wizarding here. I can add a little. A few days ago my HD-FOX wizarded. It was working fine at 2am when I switched it to standby. As I have the system monitor package installed, I know it booted for its disable-OTA reminder at 4.20am. It shut down at 4.30am, 10 minutes early. From recording schedule backups it is apparent that a 4.30am auto-update had sneaked through. It seems that having an auto-update event in the schedule during a reminder period increases the likelihood of the box wizarding. This may not be all that is required: I can't say that if you have an OTA reminder set up and an an auto-update event in the schedule that it will definitely cause the box to wizard. I can say that most wizard events I have encountered have occurred overnight. This must be more likely to happen during the OTA reminder period than when the box is in standby. On two occasions, I am sure that the box wizarded at about 4.30am and on one of these occasions I am sure that there was an auto-update event scheduled at 4.30am.That sounds more like a random factory reset than a retunes event. They happen from time to time and we don't yet know why.