after updating with #kb951748 (published today), network functions stopped - probably from a conflict with zonealarm b/c I didn't get the popups needed to allow network connectivity. after i uninstalled it, network worked fine... in my inpatience, i didn't try shutting down zonealarm first and then re-trying connectivity.
may or may not happen for you - just a psa for all =)
may or may not happen for you - just a psa for all =)