OMG, I have battled this problem off and on for at least a couple of months! Same as others, I removed and recreated the account, tried manual sync, and everything I could think of. I spent my lunch hour on Tuesday at the Verizon store in San Francisco, and they had never heard of "master sync" and had no idea how to fix this. I searched many times for "master sync" on Google, and I never found help until today. I didn't even know about the 2nd pull-down menu. PS, this issue does actually exist on Samsung Galaxy Note 2, because that's what I have. I don't know how "Master Sync" got set not to sync, but it is fixed now...finally! (regarding the pull-down menu from home screen, click window-ish icon in upper right, settings submenu) Thanks very much. :-*