Suggest to install KDE 4.9.3+ for the KDE compositing fix

~/kde-workspace$ git log v4.9.3 | grep 55a2f19c8a41d9b3d13d69d7769999daf5730414
commit 55a2f19c8a41d9b3d13d69d7769999daf5730414
~/kde-workspace$ git log v4.9.2 | grep 55a2f19c8a41d9b3d13d69d7769999daf5730414
<empty>