disk freeze?

[Randy Bush]

FreeBSD foo.bar.org 6.0-CURRENT FreeBSD 6.0-CURRENT #22: Thu Apr 21 19:09:22 GMT 2005     root at foo.bar.org:/usr/obj/usr/src/sys/FOO  i386

locks up where it will echo typing on console or ssh, but hit CR and that
session locks.  i.e. probably some locked disk issue

did manage to get a reboot command in

Syncing disks, vnodes remaining...2 2 ipfw: pullup failed
2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 timed out
Syncing disks, buffers remaining... 24 24 24 24 24 24 24 1 24 24 1 24 24 24 1 24 1 24 24 1 24 1 24 1 24 24 1 24 1 
Giving up on 24 buffers
Uptime: 1d5h8m13s
Shutting down ACPI
Rebooting...

savecore sez no dump

randy