No, I have the new driver installed already and I have the same issue still. I can sync as many times as I want, until I run the internet sharing app. Once I connect with it, its done. The next time I try to sync, the phone shows that its connecting but never does, and WMDC doesn't even acknowledge the attempt. Once I uninstall the driver and let it re-install, all is well again - at least until I use ICS again... it sucks but I live with it.
Oh yeah, and to make matters worse it does the same exact thing when trying to sync via bluetooth.