Version: (using KDE Devel) Installed from: Compiled sources OS: Linux Noatun does not respect the "alldesktops" option of kstart. I like to have my media player on all desktops, in the corner of the screen, making it easily acessable. This is currently the only thing making me stay with xmms (hint hint!).
There is no standard "mainwindow" because everything is a plugin. I don't know how to implement that and I don't even know how kstart handles this feature.
I'm afraid this is too complicated for kstart. Use the window-specific settings (Alt+F3/Advanced).