[CentOS] Crash with qemu: 5.2 host and 5.2 guest

Hi, I'm trying to install a CentOS 5.2 guest with virt-manager/qemu on a
CentOS 5.2 system (X86_x64, 3ware 9650SE, 2 x Intel VT capable xeon
cpus, 8 GB)
Unfortunately I'm getting a crash in the guest install process. (see
crash text below). Other systems are installing smoothely, even Windows
xp, but the above combination won't install  (5.2/5.2). What works well:
CentOS 5.2 xen unmodified (i.e. fully virtual) guest, but no luck with
qemu/kvm. Here's what I already tried, all without success:
* kernel-xen kernel from centosplus
* this kernel: http://people.centos.org/hughesjr/kernel/5/bz443853/x86_64/
* installed a minimal 5.1
* updated the 5.1 with Johnny's kernel
* updated the 5.1 with yum update
Have you got any idea on how I can get this installed?
TIA
Regards
Michael

PS: Here's the crash, I hope I typed everything right.  ;-)  (I didn't
want to bother you with a gif). I couldn't get further up in order to
grab more from the screen. Shift -PgUp doesn't work.

Modules linked in:
CPU:    0
EIP:    0060:[<c041041c>]    Tainted: G S    VLI
EFLAGS:    00000202   (2.6.18-92.el5 #1)
EIP is at powernowk8_init+0x5e/0x1c2
eax: 00000000   ebx: 00000000   ecx: 0000000e   edx: 00000020
esi: 00000000   edi: c06242c3   ebp: 00000000   esp: dfa47fa0
ds: 007b    es: 007b    ss: 0068
Process swapper (pid: 1, ti=dfa47000 task=dfa46aa0 task.ti=dfa47000)
Stack: 00000000 c071bbe4 00000000 c06ec5a8 c06e7fd8 c0404dee 00000202 c06ec42b
       00000000 00000000 00000000 00000000 00000000 00000000 c06ec42b 00000000
       00000000 c0506c3b 00000000 00000000 00000000 00000000 00000000 00000000
Call Trace:
 [<c06ec5a8>] init+0x17d/0x24a
 [<c0404dee>] ret_from_fork+0x6/0x1c
 [<c06ec42b>] init+0x0/0x24a
 [<c06ec42b>] init+0x0/0x24a
 [<c0405c3b>] kernel_thread_helper+0x7/0x10
 =======================
Code: 83 3d 20 41 67 c0 01 75 40 83 3d 84 d4 76 c0 00 75 37 b8 01 00 00 00 bf c3
 42 62 c0 e8 ba 12 19 00 b9 0f 00 00 00 89 c6 49 78 08 <ac> ae 75 08 84 c0 75 f5
 31 c0 eb 04 19 c0 0c 01 85 c0 75 0a c7
EIP: [<c041041c>] powernowk8_init+0x5e/0x1c2 SS:EST 0068:dfa47fa0
 <0>Kernel panic - not syncing: Fatal exception


-- 
Michael Kress, kress at hal.saar.de
http://www.michael-kress.de / http://kress.net
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