** Nepomukcontroller has been merged into kde-runtime and will be released with KDE 4.7 **
Nepomukcontroller is a small systray applet that allows you to suspend and resume the Nepomuk file indexer.
The systray was removed from KDE 4.6 to be ported to a stand-alone app which was not finished before the feature freeze. Thus, this applet will be merged back into kdebase for KDE 4.7. In the meantime you can use it from here.