What got me to look at KDE 4.2.2 was the unofficial release of openSUSE 11.1 'Reloaded' with KDE 4.2.2 packages. As Joe Brockmeier, openSUSE's community manager told me, "This is an installable live CD, so it's good for anybody who wants to run 11.1 without having to grab all of the updates since December, and for users who want to test out the latest & greatest KDE without having to re-do their system."
Brockmeier, aka Zonker, added "This is not an 'official' release, so it's not gotten the same level of testing as an 'official' release, but should be a relatively good release and is based on packages from 11.1, excepting the later KDE software."
That was good enough for me, so I downloaded the Reloaded CD image and installed it on an HP EliteBook 2530p, a 3-lb. ultra-light notebook that comes with a 1.86-GHz Core 2 Duo processor and 2GBs of RAM. This powerhouse netbook came with Novell SLED 11 (SUSE Linux Enterprise Desktop) installed on it so I had no doubts it could handle openSUSE. It also had the horses that I knew KDE 4.2 would require to show its stuff.