Hi

On 10/5/05, Art Lemasters <develunix@gmail.com> wrote:
>    Firefox and thunderbird have been failing to start in new
> accounts with an error message like the following.
>
>    Xlib: connection to ":0.0" refused by server
>    Xlib: XDM authorization key matches an existing client!

I had the same problem on debian sarge.

I think you should do
 $ xhost +
before launching firefox for the first time after installation.

--
Hiroshi SAKURAI
http://vimrc.hp.infoseek.co.jp/