So, I have my work mail set up on my phone and I only want to check it manually... no auto-sync... ever. I change the settings in the app itself, and then I also make sure the same settings are reflected under Settings -> Accounts & Sync... and all is well. But sometimes... probably once a week, the update frequency seems to automatically be resetting itself to auto-sync every 15 minutes. I can't figure out why this is happening. Anyone else have this happen to them? Any way to stop it?