You have got to be kidding me. I am 100% KDE fan, though to this day continue using KDE 3 because it is in Debian Stable.
However it would never even for a second occurred to be that KDE 4.3 - a supposedly mature mainstream desktop environment - does not have something so fundamental and simple Even/Odd printing. This is ridiculous. I don't happen to own a double-sided printer, and I use Linux+KDE 100% of the time, so how the hell am I going to print???
Don't get me wrong, I love KDE, but if this is really the case, then KDE 4 can still only be regarded as an Alpha version. Not only that, but the entire development process seems broken. Before worrying about utter nonsense like widgets on the desktop, the fundamental functionality like printing should work first! The guy on the linked blog seems to really be trying, but people this is 4.3 already!!!! How can you have a desktop environment without printing. Plus, printing happened to work great in the previous version of KDE.
Man, I was really considering upgrading to KDE 4 sooner or later, but now I really don't know. The only problem is that I find Gnome ugly and inconvenient, so I don't really have much of an alternative.