I originally had Oxfa,then Ox108,never ever ever had a problem(except caller ID never worked,well it worked for maybe a day with Oxfa).Now have Ox10b,and twice had to reboot due to black screen ,no channels.I also had to reboot while watching a recorded show because screen froze and remote unresponsive.When will D* be able to make this dvr more stable,never had a problem with Tivo.