kern/37924: can't reboot halt(8)ed system

[j+nbsd%2008.salmi.ch@localhost]

>Number:         37924
>Category:       kern
>Synopsis:       can't reboot halt(8)ed system
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jan 30 15:00:00 +0000 2008
>Originator:     Jukka Salmi
>Release:        NetBSD 4.99.50
>Organization:
>Environment:
System: NetBSD moray.salmi.ch 4.99.50 NetBSD 4.99.50 (GENERIC.NOACPI) #0: Mon 
Jan 28 06:08:03 CET 2008 
build%moray.salmi.ch@localhost:/b/build/nbsd/c/i386/sys/arch/i386/compile/GENERIC.NOACPI
 i386
Architecture: i386
Machine: i386
>Description:
After using e.g. shutdown to halt the system, rebooting by pressing
any key does not work anymore. It used to work, but I don't remember
when...
>How-To-Repeat:
        $ shutdown -h now
        [...]
        syncing disks... done
        unmounting file systems... done
        
        The operating system has halted.
        Please press any key to reboot.

Press any key, but the system does not reboot. Nothing happens...
>Fix: