All - sorry if this has been posted already: Like many, my YouTube app is very unreliable when running on the mobile network. However, after disabling the 'mobile network' and using my local WiFi for connectivity, I noticed YouTube was fully reliable. I've since used the networking widgets to test this scenario both ways and can confirm that (for me) the WiFi-only option is a good YouTube workaround. Give it a shot and let me know if it works for you...