Honestly, I haven't really hit any KDE bugs in a -very- long time, but then again I mainly use it on my laptop for actual developer workloads. KDE 4.10 is a pretty nice release with decent features. BTW, did someone really claim that Unity, Canonical's bastardized buggy hack on Gnome was really a contender to either KDE or Gnome by itself?
No announcement yet.
KDE 4.10 Desktop Delayed Into February