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My DVR721 has not adjusted to daylight savings time, so the clock in the channel guide is wrong. This causes any preset recordings to be off...the box starts an hour early. I have restarted the receiver twice, but the time will not adjust. Is there a way to manually set the time on the...

I have had a 721 box since August, and it has worked flawlessly. Now, since a sofware upgrade 3 weeks ago, I cannot watch tv while the dvr records. Within 3 minutes of the time the box starts recording, I get a black screen. I shut off the box, let it sit for 10-15 seconds, then I get the...