Package: nfs-common
Followup-For: Bug #740491
I've had this happen on two machines I've upgrade so far.
It turns out that you get an error (sorry, didn't copy down the exact
message) when you try to run:
rpcinfo -d status 1
to un-register the service.
On a third machine, I ran that *beofore* upgrading and also stopped
nfs-common, and that avoided the problem.