Solving X11 forward problems with Debian Sarge

When you install a fresh debian release, you can run into the problem that our xwin32 windows environment
gives you a X11 forwarding error.

Of course, you checked the /etc/ssh/sshd_config for the line X11forwarding yes and when you log into the new system,
you see that when you give an echo $DISPLAY you get nothing in return.

Then, the problem is that $DISPLAY isn't set when you login over the ssh tunnel.

You can solve this by running an apt-get install xbase-clients and your problems should be over.