In another thread I don't want to derail, it's mentioned several times that Android upgrades work better if the user does a factory reset after the update. I just got a new phone (insurance replacement) and it seems to have 4.3 installed. After hours of updating and installing apps I'm dismayed to find that Gmail isn't auto-syncing. I have to manually refresh to get new mail. I tried a different mail app (MyMail) and the same problem occurred. I have two Gmail accounts and it's not working for either of them. All the settings I can find seem to be correct. Any ideas? This is a huge problem for me and I really don't want to do another factory reset!