I have a 3 or 4 year old HR-20 with an external drive and it started totally freezing once or twice a day this week. The only way to fix the problem is to reboot it or unplug it. This is not a short freeze, it is a total lockup needing a reboot. Is my HR-20 on it's last leg or could an external drive do this? I guess tonight I'll unhook the external and see what happens. Unfortunately we are leaving on a week vacation in 2 days so it seems we will miss some recordings unless it is the external and I run to best buy and get a new one.