I'm running sources from last night.  At boot, directly after printing

        boot device: wd0
        root on wd0a dumps on wd0b
        root filesystem type: ffs

my 400MHz Powerbook G4 hangs.  I can drop into the debugger, where the
stack trace is like this:

        internal_command
        wskbd_translate
        wskbd_input
        kbd_passup
        kbd_intr
        kbd_processevent
        kbd_adbcomplete
        adb_soft_intr
        softclock
        hardclock
        decr_intr
        trapstart
        lcsplx
        Idel
        mi_switch
        ltsleep
        ttysleep
        ttywait
        ttywflush
        ttylclose
        zsclose
        cnclose
        spec_close
        ufsspec_close
        VOP_CLOSE
        vn_close
        closef
        fdfree
        exit1
        sys_exit
        sysctall_plain

Dave

-- 
David Young             OJC Technologies
dyoung@ojctech.com      Urbana, IL * (217) 278-3933