On Sun, 02 Sep 2007 14:41:58 -0400
Jean-Luc Wasmer <jl+netbsd@lists.wasmer.ca> wrote:

> When I run recent 4.0 or current kernels, I have the following error:
> 
> ...
> acpi0 at mainbus0: Advanced Configuration and Power Interface
> Executed AML Breakpoint opcode
> Stopped in pid 0.1 (swapper) at netbsd:cpu_Debugger+0x4:        
> pop1       %ebp
> 
> This happens on a HP Pavilion zd7000 laptop (single core P4).

Can you try disabling ACPI? press a key to stop the countdown in
the bootloader and then "boot -c, disable acpi and quit".

-- 
Juan Romero Pardines 	- The NetBSD Project
http://plog.xtrarom.org 	- NetBSD/pkgsrc news in Spanish