1. truth
2. "I think it happens more often when I am playing discs I have burned at home of hi-res files". MORE OFTEN or ONLY home made? I would want that answer.
go for a few months without playing home made. what?
3. I would say something like: research and manufacturer advises these units benefit from a monthly reboot. It is more than likely any unit (new or used) will benefit from a monthly reboot.