After typing reboot

lockmgr: locking against myself

panic
lockmgr
vm_map_pageable
trap
vm_page_insert
vm_page_rename
vm_object_overlay
vm_object_collapse
vm_object_deallocate
vm_map_entry_delete
vm_map_remove
exit1
sigexit
postsig
trap number 6

?One possibility:? I was just rebooting to engage yesterday's supped
kernel but already rebuilt the binaries, so a week old kernel was
running.

Cheers,

Patrick