Comment 23 for bug 879334

I agree 100%. It's been over a year from the time of the initial report. Personally, I dont think it is gonna be solved any time soon.

So the bottom line is that if you need a production nfs server you better use an "old stable" kernel. This looks really sad to me, because I can see that neither Canonical nor the mainstream kernel developers can fix a bug introduced (probably) back in 2008, affecting a very important piece of functionality (nfs servers and clients).