yesterday, i was having a great time playing the new battlefront beta, i decide to take a break after a 3-4 hour session. i come back and am greeted with a instant black screen, lasting to up to 20 seconds. then i finally reach the home dashboard. my Friends list was not available and after more observation i figured out i was not connected to xbox live. but when i trouble shoot my connection was perfect. So i decided that ill just try to play a game anyways. so i do that and at the start of the games menu im told that "your data cannot be retrieved, to use this app you must try again or go offline"
it is also not letting me update apps, such as the preview dashboard program. it said it was a 16mb update. but it wouldn't allow me to update it, or even access it. so i couldn't explain my problem there.
what a found very strange is that when i connected to my friends account on my xbox, his xbox live worked fine. he could view his friends list unlike me.
And YES i tried the power cycle, and trouble shooting
Things to note
-i am a member of the preview dashboard program
-this problem never occurred before the new ui
-the first day it happened a couple hours later it fixed itself, only to result to the same failure the next day.