Nothing particularly - just that I didn't know what level of knowledge the OP had, so I was recommending the pre-configured netbook images, rather than installing stock *buntu and then installing the Netbook UI overtop. In any case, if you want the Netbook UI, that's easier. Also, I believe *buntu (and probably most other netbook-specific distros/remixes) offer an image that is easy for new users to load onto a flash key for installation, given the lack of an optical drive on most netbooks. I hope that clarifies my comments.

They're calling it a "tech preview", and AFAIK, it isn't actually slated for official KDE release until 4.4 in January (being just completed as a GSoC project this summer), however, given that KDE and *buntu's release cycles are inconveniently almost completely out of phase, they got it out the door for Kubuntu. Furthermore, from what I've heard from those involved (both first-hand and on the Internets), I would surmise that the tech-preview designation is implying that things may not be finished, rather than that things are broken/non-functional. Note that I have not personally tried it - this is just what I gathered from following the development of it.

Without hijacking the thread into a KDE 3 vs 4 flamewar (or even debate), have you tried it recently? Again, I don't want to discuss it at all in this thread, but if you tried at a while back, said "this is broken/unpolished/etc.", and gave up, I'd advise you to take a look at the Netbook Remix. All it costs you is half an hour and the use of a flash key, and you might be surprised. Whether or not you like it is a matter of personal preference, but at this point it's stable and featureful, and still not even hitting it's stride in terms of potential and innovation, so I wouldn't discount it without trying it.