ive had my hub for a few years now and its been great. it is out of warrenty. its started to go a bit wrong. it freezes and wont unfreeze unless you unplug it and leave it off then power up.
when i turn it on it takes ages to boot up and load , easily 20 / 30 minutes.
the remote has totally given up and refuses to work. which you can get round by using the phone app. that is if it resoponds!
id have a guess that its around half full with music and films so a press of the factory reset is out of the question.