Comment 52 for bug 974664

(In reply to comment #21)
> There are a couple of patches that Trond has proposed upstream and for stable
> for the other (non-oops) problem. Would any of the folks suffering from it be
> able to test this and see if it fixes the issue?
>
> http://thread.gmane.org/gmane.linux.nfs/48690/focus=48705

Applied and tried.
This looks like correct behaviour:

[tim@groke ~]$ /usr/bin/flock ~/tmp/spon echo Fish
flock: /home/tim/tmp/spon: Bad file descriptor

(flock() should never have worked, really :-)

I will try this out with my original kmail problem when I have access to that desktop again in a few hours.