First I changed to 2.6.1 ... no problem at all.
Boot, GUI (KDE), Peripherals, Internet - you name it ... all was 100% OK.
From there I installed the Nvidia drivers (latest version) and during this process, and right after ... no problem what so ever.
When I reboot after installation of Nvidia drivers, it all stop booting at the X session init.
BTW, I don't have a clue regarding symbolic links ... sorry, I would need a little guidance on that topic