After blacklisting the nouveau driver, uninstalling cairo-dock (which is really impressive for about 10 minutes the first tiem you see it) and tweaking the xorg.conf for correct monitor refresh rates, its a really nice looking kde desktop. Great job, i especially like the improvements in the installer.
I would hate to be a newbie with an nvidia card trying to deal with that nouveau driver tho, it loaded after the nvidia driver blacklisted it and it loaded after i blacklisted it. What a piece of crap.
The nouveau driver may not be for all Nvidia. I have ran across an issue with it myself, during internal testing. The best way to get rid of it is to:
1.) Uninstall nouveau it using gslapt.
2.) Download Nvidia driver for your card.
3.) Reboot computer using TUI option in menu.
4.) Install Nvidia driver.
5.) Reboot to normal mode.
This will prevent the driver from loading, since it is no longer installed. Blacklisting the nouveau driver seems to be as much of a "hit or miss" as the nouveau driver working. Nouveau is still "young" in it's development, give it more time as the developers there work out some more stuff with it. I think it is a great alternative to the closed source and licensed driver. It just needs a little more work from the developing end. They've come a long way so far, covering most cards, so please give them some credit and encouragement.
Anyway, if you end up with a black screen instead of a desktop after entering the login information, it may be the nouveau driver. Cure it as listed above and you should be fine.
NOTE: You should be able to log into the XFCE desktop without issue to do the above steps. This seems to be mostly an issue with KDE4. If you can't get into either desktop, then you will need to select a vesa driver during installation, then you may proceed.