There's still a few months left before KDE Software Compilation 4.5 will be released, but for the interim there are the usual monthly point releases of the current stable branch. As such, with the start of a new month, KDE Software Compilation 4.4.3 was released this morning...
I guess I will never touch it again after several horrible experiences with KDE 4
*sigh* Better do not touch the wrong distribution again. Some heroes of we always have bleeding edge stuff in here messed it up and put 4.0 that was clearly declared not to be a user release in. Upstream said no but they put. And probably didn't even put it right.
And some smaller bugs you will find everywhere. I'm KDE user since v3 and it works fine for me, even on some weaker machines.
Of course KDE upstream often adds new features in a first release and then comes later with the fixes so it's often better to wait for a 4.x.1 or so.