Comment 10 for bug 661294

My Server is:
 Kubuntu 10.04 (Linux unimatrixserver 2.6.32-25-generic #44-Ubuntu SMP Fri Sep 17 20:05:27 UTC 2010 x86_64 GNU/Linux)

On the server, the 'mount' command provides the following output:

/dev/sda1 on / type ext4 (rw,errors=remount-ro)
proc on /proc type proc (rw)
none on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
none on /dev type devtmpfs (rw,mode=0755)
none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
none on /dev/shm type tmpfs (rw,nosuid,nodev)
none on /var/run type tmpfs (rw,nosuid,mode=0755)
none on /var/lock type tmpfs (rw,noexec,nosuid,nodev)
none on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
none on /var/lib/ureadahead/debugfs type debugfs (rw,relatime)
rpc_pipefs on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw,relatime)
/dev/sdd1 on /media/b2 type ext3 (rw)
/dev/sdc1 on /media/d3 type ext3 (rw)
/dev/sde1 on /media/b1 type ext3 (rw)
/dev/sdb1 on /media/d5 type ext3 (rw)
/dev/sda6 on /media/d4 type ext3 (rw)
nfsd on /proc/fs/nfsd type nfsd (rw)

The output of cat /proc/mounts seems to be a bit more detailed:

rootfs / rootfs rw 0 0
none /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
none /proc proc rw,nosuid,nodev,noexec,relatime 0 0
none /dev devtmpfs rw,relatime,size=1019572k,nr_inodes=254893,mode=755 0 0
none /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
/dev/disk/by-uuid/cafc3ff0-a72d-4901-9d74-a608281b7a9c / ext4 rw,relatime,errors=remount-ro,barrier=1,data=ordered 0 0
none /var/lib/ureadahead/debugfs debugfs rw,relatime 0 0
none /sys/fs/fuse/connections fusectl rw,relatime 0 0
none /sys/kernel/debug debugfs rw,relatime 0 0
none /sys/kernel/security securityfs rw,relatime 0 0
none /dev/shm tmpfs rw,nosuid,nodev,relatime 0 0
none /var/run tmpfs rw,nosuid,relatime,mode=755 0 0
none /var/lock tmpfs rw,nosuid,nodev,noexec,relatime 0 0
none /lib/init/rw tmpfs rw,nosuid,relatime,mode=755 0 0
rpc_pipefs /var/lib/nfs/rpc_pipefs rpc_pipefs rw,relatime 0 0
/dev/sdd1 /media/b2 ext3 rw,relatime,errors=continue,data=ordered 0 0
/dev/sdc1 /media/d3 ext3 rw,relatime,errors=continue,data=ordered 0 0
/dev/sde1 /media/b1 ext3 rw,relatime,errors=continue,data=ordered 0 0
/dev/sdb1 /media/d5 ext3 rw,relatime,errors=continue,data=ordered 0 0
/dev/sda6 /media/d4 ext3 rw,relatime,errors=continue,data=ordered 0 0
nfsd /proc/fs/nfsd nfsd rw,relatime 0 0

NOTE: Only /media/d3 /media/d4 and /media/d5 are exported via NFS

The content of /etc/exports is the following:

/media/d5 192.168.1.0/255.255.255.0(rw,sync)
/media/d4 192.168.1.0/255.255.255.0(rw,sync)
/media/d3 192.168.1.0/255.255.255.0(rw,sync)

(As far as I can remember I also tried several different settings like 'async' instead of 'sync' but I can't nameexactly all the things I tried some weeks ago.)

If you need any additional information about the server or the client I'd be glad to provide!