Quoting Simon Burge,

> > IMPORTANT: since this change included extending the export_args
> > structure and thus the mount structure in <sys//mount.h>, you should
> > do 'make includes' in /usr/src/sys and then recompile /sbin/mount*
> > before booting a new kernel, even if you're not using NFS at all.

> I'm currently running "stable" kernels from about 3 days ago, and flakey
> kernels from -current.  Am I hosed?  Do I need to keep two different
> sets of mount* binaries?

Well, you can always recompile the mount binaries using the old sys/mount.h
and use them with the 3 days old kernel if you want to.

What exactly is the cause of the flakiness?

- Frank