Comment 1 for bug 540637

Thank you for taking the time to report this bug and help to improve Ubuntu.

What kernel version were you running before this upgrade? None of the (many!) changes in the -20 uploads look very likely to be related, so it may be that there's an underlying race condition that's aggravated by timing differences in the new kernel.

And indeed there is an underlying race condition, because /etc/init/portmap.conf may run in parallel to /etc/init/rc-sysinit.conf.

The correct fix is to switch nfs-kernel-server over to upstart for lucid, to eliminate the race condition. As a workaround, you can edit /etc/init/rc-sysinit.conf on your own system, and add 'and started portmap' to the list of start conditions.