Ive had the youtube problem for a month now.Some where in one of these forums is the idea of re-installing the BSD system. Thats what i did but it said "failed" or something like that. Even though it failed my youtube just started working again. this happens alot to me. When i try to download something from installer it says " Package Download Failed" then i Turn the i touch off then turn it back on and the application is there. but anyways go to INSTALLER then find BSD SUBSYSTEM Find the button UNINSTALL it may say ERROR: PACKAGE DOWNLOAD FAILED but screw it Hit your home button and TURN OFF YOUR I TOUCH/PHONE BY HOLDING THE POWER BUTTON LOCATED AT THE TOP OF YOUR DEVICE. Then TURN IT BACK ON. GO TO YOUTUBE AND SEE IF THAT HELPED. HOPE IT WORKS FOR YA.