Since a few day I've trouble to shutdown my machine (running 
NetBSD-current/i386). Sometimes it just hangs on the "Syncing disks"
kernel message. Escaping to the kernel debugger and doing "ps"
shows that "mfs" is still there (I use an mfs as /tmp).
Perhaps this has something to do with "vfs_unmountall"?

/  Thomas Eberhardt <thomas@mathematik.uni-Bremen.de>  \            Moo!  (__)
| Center for Complex Systems and Visualization (CeVis) |_________/--------(oo)
|     University of Bremen, FB 3, Bibliothekstr. 1     |        * |______||\/
\_o_ D-28359 Bremen, Germany, FAX: +49 421 218-4236 _o_/          ^^     ^^