Have had one of these machines for six months now and have installed all of the latest firmware updates as they were released. I have been very impressed with it and the HD picture quality blew me away. I have recently however (there's always a however isn't there) experienced major problems that, when recording, it fails to stop when the program is over. It doesn't happen all the time but when it does, it continues untill I manually stop it. The first time I didn't notice until it had been recording for over 2 days. Has anybody else had this kind of problem?