Comment 24 for bug 470776

I am/was also affected by this. I run a home network with a main nfs server and 4 diskless clients which need root over nfs as well as other nfs mounts. I have been able to keep this setup going since Dapper until this past upgrade to Karmic. After struggling with this for the last 2 days I can at least complete a bootup. The main changes I had to do were:
1. Change the kernel option in my pxe setup to use nolock
2. Add "/dev/nfs / nfs defaults,nolock 0 0" to my fstab. Previously, it wasn't necessary to have my root dir listed in the fstab.
3. Add nolock to all the other nfs mount entries in the fstab.
4. Add remounts to set lock in rc.local