Comment 2 for bug 954619

The error in the logs is:

 Unpacking replacement nfs-common ...
dpkg: warning: unable to delete old directory '/var/lib/nfs/rpc_pipefs': Device
or resource busy
[...]
Setting up nfs-common (1:1.2.5-3ubuntu1) ...Installing new version of config file /etc/init/gssd.conf ...
Installing new version of config file /etc/init/idmapd.conf ...
idmapd stop/waiting
rmdir: failed to remove `/var/lib/nfs/rpc_pipefs': Directory not empty
dpkg: error processing nfs-common (--configure):
 subprocess installed post-installation script returned error exit status 1

Everything looks like it's going according to plan, and then the directory isn't empty. Can you please show the output of the command ' ls -l /var/lib/nfs/rpc_pipefs' on this system?