This is making me crazy: I run WinXP at work and home. Same OS, same updates, same version, same everything. I use outlook exchange at work and home. Same account, same server, same everything. When I hotsync, I tell it to syncronize, thus the contacts, notes, ect. that I have added to the phone will show up on outlook & vice versa. However, no matter what I do, it creates duplicates in these two areas (contacts calendar). Is this software really so rudimentary that it cannot see that THE ITEM ALREADY EXISTS in the phone & in outlook. I do not see how it could mistake, for instance, two contacts labeled: "Neal, John" and think these are distinct. Am I missing something? Again, it creates dupes on both the handheld and outlook that HAVE NOT BEEN CHANGED ON EITHER. Please help before my phone intersects my brick wall. Thank you very much for helping a (very disgruntled) fan of my Treo 680 As my blood pressure lowers, it occurs to me I should also mention that I am using Outlook 2007 at work AND at home & have the appropriate conduit. I am sure I am leaving out information that could be helpful, but at this point, cannot think of what that would be. Please reply & I will furnish any info & and clear up any confusion. Thank you again.