server software used on ubuntu main mirror

[Gabriel M Dragffy]

On Fri, 2006-10-13 at 15:55 +0100, Steve Flynn wrote:
> On 13/10/06, Gabriel M Dragffy <dragffy at yandex.ru> wrote:
>         I was just wondering, what OS is ACTUALLY used on the main
>         ubuntu ftp
>         mirrors? Do they use a version of ubuntu or debian or is it
>         something
>         like BSD? I know this is a little off-topic, but the answer
>         only
>         requires a word or two, so I'm hoping some one could tell
>         me :) 
> 
> http://uptime.netcraft.com/up/graph?site=releases.ubuntu.com
> 
> -- 
> Steve
> Despair - It's always darkest just before it goes pitch black...

Ah but which version of ubuntu?