I have seen much written about duplicate entry creation but nothing concerning my current problem. I sync 2 devices with my Windows 7 laptop, one with WM6.1 and one running WM6.5. They are both synchronised with the same calendar but the 6.5 machine gains duplicate entries on its first connection. These duplicates are not reflected on the 6.1 device. I use Google Calendar Sync to keep gCal up to date but can't see how this would affect matters. Any ideas for a fix would be appreciated.