I've had a R15 for about 3 months now. Twice now over the course opf 3 weeks, the thing went into a "loop" of constantly rebooting itself. I would have to unplug it for a few hours before it would start working again. The second time it did this, I called D*. They had me do a "reset" through the on screen menu. They said this should restore the machine to facotry defaults and reformat the hard drive. I did this and so far (2 days) everything seems fine. Has any one else run across this problem? Should I be pushing D* for a new unit?