[NTLUG:Discuss] NFS v4 status, particularly on Linux?

[Leroy Tennison]

Last time I looked at NFS v4 (a while ago) I'm not sure it was even out 
(still in early proposal stages).  Noticed a reference to it in an 
unrelated search today and it now seems to be "production stable".

Anybody know what it's "real world status" is?  Is it being adopted?  Is 
it "good" technically (whatever that means, specify either way) or does 
it look like it's going to inherit the previous version's security and 
other concerns?