I've come a little bit further...

When I place the (above mentioned) script "xconnect" in the rc.local, it starts correctly, but it never "ends".. Therefor the rc.local waits until the script exits but this never happens. Putting Exit 0 on the last line didn't do the trick either.

I googled around a bit, and found that the script should run as a system-process or daemon..

But googling some more on how to do that, did not result in anything...

Does anyone have a clue on how to do that? (OR in another way accomplish the "perfect world" ?

I haven't had a chance to look yet but have you considered/tried using /etc/inittab

david, thanks!

I figured it out. So just for anyone's info:

Since I run gdm as default display manager, I edited /etc/X11/gdm/gdm.conf
and added on the last line:

1=/etc/X11/xconnect

now i created a little script called xconnect, which first checks if the server I want to connect to is available, and if that is the case, it runs X -query 1.2.3.4

(See earlier in this thread)

When started from gdm, it starts as a process, so it generates no output, except in the case of errors, but then the errors go into the correct log....

For all who helped me with this one: THanks!!!!!!

Well done - I'm sure others will find this thread useful in the future.