nfs-common

Out of the box Ubuntu will support NFS mounting but will take about 90 seconds to do it and not work well. If you check /var/log/messages you'll see errors [1]. To fix this install the nfs-common package:

http://packages.ubuntu.com/feisty/net/nfs-common

Footnote:

[1]

[4661210.004709] portmap: server localhost not responding, timed out
[4661210.004745] RPC: failed to contact portmap (errno -5).
[4661244.949461] portmap: server localhost not responding, timed out
[4661244.949496] RPC: failed to contact portmap (errno -5).
[4661244.949513] lockd_up: makesock failed, error=-5
[4661279.894214] portmap: server localhost not responding, timed out
[4661279.894248] RPC: failed to contact portmap (errno -5).
[4661279.894255] nfs: Starting lockd failed (do you have nfs-common installed?).
[4661279.894284] nfs: Continuing anyway, but this workaround will go away soon.