No IFE working on my two Intercontinental segments, not important in itself but indicative.
Not that IFE problems are uncommon on any aircraft, but bad choice of system and airlines wanting all the bells and whistles (intensive customisation) on their particular aircraft, makes things worse.
When you basically have a personal computer under each seat group (1~3 seats), something, statistically, has to break down (how many times has your home computer needed a reboot?). Also, IFE system manufacturers still haven't quite grasped the fact that vibration, huge variations in temperature and spilled coffee are normal on all aircraft.
I hear that one customer was so upset that the IFE box under the seat in front of him was reducing his legroom, he repeatedly kicked it.