I have been having the lock up and system reset problems others here are describing and I too called Direct Tv. They suggested the 02468 forced software upgrade but I couldn't get it to work on any of our three d10-200 receivers. I finally figured out what I was doing wrong. I'm used to hitting "enter" on the remote after punching in numbers and this is what I was doing with the 02468 trick. Simply don't hit "enter". While it's at the hello screen just punch in 02468 and do nothing else but wait. If you do that you will get a download screen in a couple minutes. Hope this helps some other frustrated person out there. ;^)
All my receivers have been doing this since I had the system installed in july 05. It didn't really bother me too much as it was a minor inconvienience to have to reset the sytem a couple times a week. Then came fall and the fall tv lineup. Needless to say that a frozen system doesn't let your DVD recorder record Lost or Surface or anything at all. That's a bit annoying to say the very least. You come home expecting to see your favorite show and you are greeted with a comatosed receiver and a few hours of snow on the DVD.
I pray that the upgrade fixed this annoying problem. I'll check back here in a week or so and let you all know.