First, let me say I can't find anything exactly like this in searching here or elsewhere. I thought this would be a bug in the recent releases, but I assume not. It's NOT: 1. Mobile Me Contacts mixed with Exchange. 2. Copies of all contacts. Background: New iPhone 4 (Verizon 4.2.7), Activesync'd to Exchange. Hundreds of contacts in Outlook. None in Mobile Me. (MM is just 'Find My iPhone', etc.) No other accounts have contacts, just Exchange. Here's what happens. Most contacts are being duplicated several times and it increases randomly. Also, if I make a change to a contact, it appears to create a new copy for that one (not overwrite the original). Worse than that, if I, for example, assign a ringtone and/or text tone to a contact, shortly I have a duplicate, and neither one has the new tones! Both settings are back to default. Worse than useless. I've tried removing all contacts (turning that switch off in settings, having it clear from the phone) and then having it reload from Exchange, that seems to last for about ten minutes (where we then get duplicates or the tone settings disappear). I've had all this data on three iPhones (3GS, 4 AT&T, and now this one), up to yesterday, no problems at all. No idea what caused this mess to start. The only thing I remember doing is linking several contacts to their parent, not liking how that worked (name-wise) and removing the links. Then all this happened. Connected? Who knows. Another fact is that I also have two iPads (4.3 and 4.2) connected to the same Exchange account) and they don't show this mess. So, I'm stumped. Anyone have any suggestions? Need more info?