Activesync Drop out
Yep, disable your Symantec Products!!
One of the Symantec programs which prevents applications from starting, like Spam and Spyware. At some stage you checked the option to block the program from startup either wcescomm.exe or one of the others required. The activesync connection requires both of these to be able to complete the sync.
Found this a few months ago, when helping a friend who had blocked one portion and not the other, just can't remember exactly which program I checked.
However, If you are using any spyware stopper or something similar it could be preventing startup applications from starting, i.e. wcescomm.exe