I suppose we could see software issues, since these are computers.
My blu-ray player can every so often get confused, I don't know if it's
consistent, but if I press the open button at the wrong time, something
seems to jam, and I can't turn it off or do anything, until I unplug it
from the line.
I haven't updated it since I found it, I think there might be an update,
so who knows if it's a software issue that's already been found.
Michael