I've got a Duo2 that randomly freezes/locks up. This can be just watching tv or playback of recorded material, during recording or just sitting standby.
I've found that older Pli image(6.2) is more stable than the newest, but not perfekt, just less freezes. Maybe due to smaller image, memory problem?
I had another Duo2 laying around so I swapped over HDD and tuners to that box, and now it's working perfectly with a backup image.
So it has to be a hardware problem I think. Anyone experienced the same? Would like to fix this box again if it's possible.