slackware-current and nvidia
For those hoping to update to slackware-current (2.6.33.1) and make use of alienBOB’s KDE SC 4.4.2 with PolicyKit packages, you need to be aware of one caveat. If you use the proprietary NVidia driver, you will need to blacklist the nouveau driver in order for it to work.
/etc/modprobe.d/nouveau.conf
blacklist nouveau
UPDATE: 20100428
A package has been added to slackware-current to do this for you:
x/xf86-video-nouveau-blacklist-noarch-1.txz

While this is indeed the correct solution, personally I have come to appreciate the method of giving everything its own configuration file for this. So just stick the same code in /etc/modprodbe.d/nouveau.conf. This also saves in my view some hassle with upgrading.
Fair point; article updated.
I solved this problem by other way – making changes in lilo.conf vga=773 (where on install time there was set vga=791), and then installing NVidia driver. All run smoothly and after install there was possibility to change vga back to 791.
@Agris
How does changing the fb mode affect the loading of the nouveau kernel module?