Originally Posted by
endobert
Oh, and not to mention the echoing. There was a slight delay between the FA announcements coming thru the regular speakers and that which was coming through my (UA supplied) headphones -- fractions of a second, but an irritating echo nonetheless -- enough for me to remove my headphones when there was an announcement.

I wonder if that is a general IFE problem or something to do with the supposed 2-prong noise cancellation thingamajig.
I noticed this too on both the 767 and 747. Also, on all of my flights (4) the map function froze up and couldn't be fixed by rebooting.