vnc not function on boot

[jdow]

From: "Tim Waugh" <twaugh at redhat.com>

> Well, you can only run one VNC or X server per display.  If you have X
> running on display :1, you cannot run VNC on that display.  Similarly,
> if you already have a VNC server running on display :1, you cannot
> start another one on the same display.

Please excuse me for butting in here. I'm curious whether this is a
security or a technology issue? (I can see a severe security issue.
But I am not sure if it is also a technology issue.)

{^_^}