Turned on BITV ch203 at 3am. OK until 3:19am Eastern time, froze until 3:25am. Checked 111 using other tuner. Also froze. Both cleared at the same time. Other channels OK, the ones I checked anyway. Both are on 72 transponder 20. DVR had finished its nightly update at 2:30am. Software L755. Don't think its the DVR though. Now its 3:48am and hasn't froze since clearing at 3:25am. Have other things to attend to. Maybe it's fixed. Hope so.