Thanks. Found it.
> From: rmmullen@gmail.com
> Date: Fri, 18 Jan 2013 14:20:21 -0500
> Subject: Re: error installing nginx
> To: rwobben@hotmail.com
> CC: crux@lists.crux.nu
>
> On Fri, Jan 18, 2013 at 2:16 PM, Roelof Wobben <rwobben@hotmail.com> wrote:
> > When I want to compile and install nginx I get this error message :
> >
> > chown : invalid user 'nginx:0'
>
> nginx has a pre-install script that takes care of this for you. Please
> check the prt-get documentation for executing pre/post install
> scripts.
>
> Ryan