Extracting onto nfs partition locks NFS server

[Kelley Reynolds]

I have two -current boxes, one from yesterday, one from a week ago. The most recent is the NFS server which locks whenever the other one performs a 'make extract' in the NFS-mounted /usr partition. The exports file is the following:

     /usr -alldirs -maproot=root

and the mount options in fstab are
 
     soft,tcp,nfsv3,rw

It's extremely repeatable if there is anything I can do to help diagnose.

Kelley