Another month, another update to the KDE 4.0 series. This time, we are presenting KDE 4.0.4, dubbed File-Not-Found to the audience. KDE 4.0.4 brings improvements to KHTML, Okular and various other components. We recommend that people who are already running KDE 4.0 releases update to 4.0.4. The emphasis of this release lies, as usual in stabilising, bugfixing, performance improvements and updated translations -- no new features.