Xlib: connection to ":0.0" refused by server
Xlib: Invalid XDM-AUTHORIZATION-1 key (failed key comparison)

Gtk-WARNING **: cannot open display: :0.0

I'm logged in on a root shell but logged into KDE via another user could this be the problem?

You can have only one XServer running at the same time. Well, not exactly. Try
startx -- :1
(then -- :2 etc and you can have more).

ok When I do this it feels like I did the command, "kde restart";

My screen immediatly turns blank and kde restarts and all my terminals are gone but all connections other services are the same.

Looks like two version of KDE are running?

micxz 1916 0.0 0.4 2528 1216 ? S 14:17 0:00 /bin/sh /usr/X11R6/bin/kde

AND

micxz 3701 0.0 0.4 2528 1204 pts/1 S 18:28 0:00 /bin/sh /usr/X11R6/bin/startx -- :1
micxz 3702 0.0 0.2 1532 528 pts/1 S 18:28 0:00 tee /home/micxz/.X.err
micxz 3714 0.0 0.2 2164 684 pts/1 S 18:28 0:00 xinit /home/micxz/.xinitrc -- /usr/X11R6/lib/X11/xinit/xserverrc :1 -auth /home/micxz/.Xauthority
root 3715 3.3 3.1 75940 8008 ? S 18:28 0:07 X :1 -auth /home/micxz/.Xauthority
micxz 3726 0.0 0.4 2528 1216 pts/1 S 18:28 0:00 /bin/sh /usr/X11R6/bin/kde

Can I switch Back to the other one, while keeping the other session?

You can switch between them. First is crtl+alt+f7, second ctrl+alt+f8.

WOW. HOW COOL. I Find something I love more and more about linux everyday! Thank You;