Sorry I had to do an emergency reboot on servers today.  I discovered what caused this morning’s crash and it was a bug in the kernel I was running that caused it to not recover resources as processes exited and new ones were created, so it would continue to eat memory until it ran out then crash and reboot.

     I don’t know if this present kernel is trouble free but I do know it does not have this particular problem and NFS seems to work correctly in it, which has been the main reason for all the kernel experimentation lately.