This happens a LOT on my 920. For some reason, all of my background tasks (except phone, email, and messaging) stopped functioning. That means my Me tile won't update, wpcentral won't update, 6tag won't update, etc. I tried soft resets, and it doesn't work. The only thing that works is to drain the battery, but then the issue comes again later. This has been going on for months on my 920, and my sisters 1020. What do we do? Please help! Thanks.