The ExchangeSync in my HTC Desire hasn't exactly been flawless but after several hard resets and countless adding and deleting of exchange accounts it's been working all right for a while now. Sure, it does continues to sync a few times every day, though I've sett the sync to manual, but that I've learned to live with. But a couple of weeks ago it started to change my settings on it's own accord. I only want my google contacts in my phone, so I've set the settings for my exchange account as follows: Schedule: Manual Sync mail: checked Sync contacts: NOT CHECKED Sync calendar: checked But even though I perform no manual sync on my exchange account hardly a day goes by without my exchange contacts suddenly appearing among the google contacts. If I then look at the settings for Exchange ActiveSync in Accounts & sync the "Sync contacts" is checked. Every time this happens I uncheck it and clear the data from Contacts Storage in Manage applications. My google contacts are then eventually synced and everything is as it should be for a few hours or a day, or till I restart my phone. And then the exchange contacts appear again... Does anyone have any advice? This erratic behaviour of my phone is driving me crazy.