[pa1556]

I have the same basic problem. I have the cable on one of the most reliable ports on my Dell (three different ports have different characteristics), but using WM6.1 it still sometimes stops syncing - usually when the phone gets fully charged. I have found enabling internet connection sharing from the comm manager screen (then selecting "connect" on the internet connection screen) "wakes up" the laptop, which then initializes the network connection. After that, I disconnect the Internet Sharing. Activesync usually comes back to life and all is well.