Hola at all,
I was a blind fish
Here comes the solution with your help:
Starting with the videosafemode Option the installation went fine.
I think the problem is the videodisplay driver for my Samsung SyncMaster 940BF Monitor.
The xorg.conf of another PCLinuxOS KDE LiveCD reported that the screen was found, but not the right way configured. So I took a look and found refreshrates with about 80 and 100 Hz. That is too much. At maximum 75 Hz.
A functional "generic"-monitor with max. resolution made me happy at the end
Maybe I can help at another place, too.