Comment 10 for bug 540637

My nfs server on Lucid is not working. I don't know if it is related to this bug. I used the following setup:
sudo apt-get install nfs-kernel-server nfs-common portmap
sudo dpkg-reconfigure portmap (set as no)
sudo gedit /etc/exports (/opt *(rw,no_root_squash,async)
sudo /etc/init.d/nfs-kernel-server restart
sudo exportfs -a
This used to work when i was using a non-pae version. Now i've reinstalled with PAE. My kernel is 2.6.32-22-generic-pae. I tried the above stop/start portmap and nfs-kernel-server mentioned above, still no luck getting it to work. My nfs client is an sh4 embedded linux and it connects fine on my Fedora box.

Jun 2 10:34:27 nigel-laptop mountd[22985]: Caught signal 15, un-registering and exiting.
Jun 2 10:34:27 nigel-laptop kernel: [30781.533161] nfsd: last server has exited, flushing export cache
Jun 2 10:34:30 nigel-laptop kernel: [30784.045011] svc: failed to register lockdv1 RPC service (errno 97).
Jun 2 10:34:30 nigel-laptop kernel: [30784.046044] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
Jun 2 10:34:30 nigel-laptop kernel: [30784.046072] NFSD: starting 90-second grace period
Jun 2 10:34:37 nigel-laptop kernel: [30791.091781] Inbound IN=eth0 OUT= MAC=00:26:22:a7:2a:ef:00:50:bf:00:00:01:08:00 SRC=192.168.202.126 DST=192.168.202.26 LEN=132 TOS=0x00 PREC=0x00 TTL=255 ID=64396 DF PROTO=UDP SPT=1000 DPT=50175 LEN=112
Jun 2 10:34:52 nigel-laptop wpa_supplicant[938]: WPS-AP-AVAILABLE
Jun 2 10:35:52 nigel-laptop wpa_supplicant[938]: WPS-AP-AVAILABLE
Jun 2 10:36:15 nigel-laptop kernel: [30889.481297] Inbound IN=eth0 OUT= MAC=00:26:22:a7:2a:ef:00:50:bf:00:00:01:08:00 SRC=192.168.202.126 DST=192.168.202.26 LEN=132 TOS=0x00 PREC=0x00 TTL=255 ID=64399 DF PROTO=UDP SPT=1000 DPT=50175 LEN=112

The inbound is from my nfs client which eventually times out. I'm new to Ubuntu and really appreciate any help. Thanks