On Mon, Aug 27, 2007 at 06:51:27PM +1000, Ray Phillips wrote:
> I've installed NetBSD/amd64 (built from sources CVS-updated on 21 
> June 2007) on a Dell Precision 490; its dmesg's output is appended to 
> this email.  The x11/kdebase3 package has been installed using the 
> 2007Q2 pkgsrc, but I guess that's irrelevant at the moment.  I've 
> found running 'xinit' or 'startx' reboots the machine.

Could you retry with a realy -current kernel?
I think I commited a fix for this last night.

Martin