32bit debian on 64bit hardware

[Hans du Plooy <hansdp-lists@sagacit.com>]

Hi guys,

I'm just curious, I have a mailserver at work which runs Sarge,
installed from the normal i386 CD, onto a 64bit enabled Sempron along
with the K8 kernel.  When I do uname -a I get this:

Linux mercury 2.6.8-11-amd64-k8 #1 Mon May 30 22:15:15 UTC 2005 x86_64
GNU/Linux

I tought x86_64 means I'm running a 64bit OS?  Or does it simply show
the underlying hardware architecture?

Thanks
Hans