Version: (using KDE KDE 3.5.0) Installed from: SuSE RPMs OS: Linux If your ~/.kde-dir does not have any space left, things are going wrong, which can be as bad as data-loss, e.g. kmail. But even if there is not data-loss, KDE starts to behave funny and throw all kinds of error-messages. Hence, in order to improve "stability", kded should watch the space left for .kde and warn, if it gets below x MB.
This is a KDE 3.5 bug, which is currently unmaintained. See bug https://bugs.kde.org/242580 for a KDE SC 4.x related bug.