Originally Posted by Trident

I also had many of these issues on an intermittent basis.
Since installing as 4.5, it's been completely stable when syncing. I even get up in the morning and it's still connected after a soft reset (prior to backup) done during the night. 4.2 would almost never reconnect unless I physically disconnected and then recradled the device.

If you aren't already using it, I'd suggest giving it a try.
http://www.microsoft.com/downloads/d...displaylang=en