If your NFS mounts seem to take ages to, er, mount, and OpenOffice always opens things read-only, then maybe you forgot to install nfs-common and thus have no NFS locking support.
Or you could go to NFSv4 (mentalist).
Or disable locking in OOo (mentalist).
Feisty more than needs nfs-common to do locking… it needs it to allow mounting of NFS volumes at all.
What once used to just timeout and do a mount without locking after *a long wait* now fails with an ‘unable to read superblock’ error. So apt-get install nfs-common…