After multiple setbacks we have finally managed to stabilise KDE4 on both major desktop architectures (amd64 and x86), with other teams to follow.
For this and other reasons as discussed , those of you who still use KDE3 should be seriously considering an upgrade in the near future.
The KDE3 support is being deprecated with immediate effect. This means that ebuilds are dropping KDE3 support where they were broken, or clashing with KDE4.
Rest Here 
(editor's note: geez, the upgrade's gonna be h-e-double hockey sticks!)