> 
> Do most people need esoteric things like AFS tokens, or anything else
> which can't be done with PAM? Maybe the solution is to hack the special

Maybe it is not widely used only because it is not easy to do it in
current situation?
I don't see any method to implement a secure distributed filesystem without
doing such esoteric things. For kerberized NFS, you would need to set a
kerberos ticket in the kernel too (please correct me if I am wrong).

Pavel