Just over a year ago we had a long discussion over the NX200 not printing colours correctly and I resolved it by using the TX200 driver in Gutenprint instead.http://www.pclinuxos.com/forum/index.php/topic,97245.60.html
The latest version (5.2.9) of Gutenprint has solved that, colour register is fine, but now there's another problem: It won't print correctly in landscape format. It prints to the width of a page (8.5 in for US letter) leaves a gap and then reprints part of what it has already printed.
I also had a problem when I tried to print a CD booklet on a custom size page (24x12 cm) - it just hangs.
Fortunately I still have my reliable old KDE 3.5 installation available in another partition and this (Gutenprint 5.2.4) prints OK.
Most of my printing is done from OpenOffice (the real thing not the substitute), but I also have had similar problems printing landscape pdfs from Adobe, so I don't think it has anything to do with OOo versions.
This time the TX200 driver has the same problem, so my fix doesn't help.