I met the same problem.
If you update the applications seperately, like each time you only check one or two application to update, all the applications can be updated well.
Looks like the server is not stable , not the patch's problem.
The update froze at the downloading phase, right? (the updates windows display "Currently Downloading ...")
If it freezes at the installing phase(the updates windows display "Currently Installing") it will not be the server's problem.