Xen 3.3 wont boot

[Kazushi (Jam) Marukawa <jam%pobox.com@localhost>]

Hi,

Today I tried xen 3.3, but it won't boot.  It just rebooted
without any messages.  Messages I got is just below (i386
xen3_dom0 kernel with xen-debug).

---
<<< GRUB MENU >>>

  Booting '1013 Xen / NetBSD (hd0a, serial)'

kernel (hd0,0,a)/xen dom0_mem=512m com1=57600,8n1
   [Multiboot-elf, <0x100000:0xe754c:0x81ab4>, shtab=0x269078, entry=0x100000]
module (hd0,0,a)/stand/20081013/netbsd-XEN3_DOM0 bootdev=wd0 ro console=ttyS0
   [Multiboot-module @ 0x26a000, 0x9a26bf bytes]

Press any key to continue.
Press any key to continue.
Press any key to continue.

<<< GRUB MENU >>>
--

I tried both i386 DOM0 kernel and amd64 DOM0 kernel.  I also
tried both xen and xen-debug.  All of those combinations
just showed messages similar to above and rebooted.

This PC has been working fine with Xen 3.1.4 for a long
while, but not with Xen 3.3.  ;)

Additional info: This PC contains Gigabyte GA-8I945GMMFY-RH
and Core 2 Duo T-something.  All kernel and pkg sources are
retrieved at 2008/10/13 UTC.  This machine has been working
fine with Xen 3.1.4 for a while.

grub entry:
----
title 1013 Xen / NetBSD (hd0a, serial)
  root(hd0,0,a)
  kernel (hd0,0,a)/xen dom0_mem=512m com1=57600,8n1
  module (hd0,0,a)/stand/20081013/netbsd-XEN3_DOM0 bootdev=wd0 ro console=ttyS0
----

Please let me konw any suggestion / anytig-what-I-should-try.
Thanks.

Regard,
-- Kazushi
Here at the Phone Company, we serve all kinds of people; from
Presidents and Kings to the scum of the earth ...