Hi,
I tryed to execute the first sync with Outlook 2010 after I upgrade my x10a to 2.1 and it fail dozens of times. The progress bar apear, it seams to be synching and after finish no events were in the phone.
I solve the issue by creating a dummy new event in the phone. Push the appointment sync button, the new dummy event show up at MPE and my Outlook 2010 and then all my Outlook events appeared in the phone as expected.
Maybe somebody else will run into the same issue, and this is the way to solve.
Rodrigo