I have a Sony Ericsonn T68I that I just got today. The Kensington USB Bluetooth adapter works fine with iSync and my Mac found the phone without a problem. I set iSync to erase the phone and completely update it with my address book and iCal. It did so and everything was great.
Then I changed something in my iCal and when the phone updated it started downloading to my iSync. iSync says "Getting changes from T68i (34K downloaded). Then it says "Applying changes to T68i (34K uploaded)".
There haven't been any changes on the phone so why is it downloading? Why is it uploading so much to my phone for just one iCal change?