I'm still having this issue. I can't trust the unit to record the shows that I choose. The unit freezes when I schedule two Hi-Def shows to record at the same time. I don't know if it is a signal issue, a software issue, or that something is wrong with the hard drive. This is the second unit that I picked up and it has the same problems as the first.
At times, the DCX3400 will show that a show is fully recorded (one hour), but when I try to play the show, only a few minutes will actually be recorded.