Version: (using Devel) OS: Linux Installed from: Compiled sources Using KDE 4.1.87 on Kubuntu. I like defining ALT+M as "minimize window" as I'm running MythTV and it hides the mouse pointer. So to get to the desktop on my HTPC, I press ALT+M. After upgrading from KDE 3.5.10 to 4.1.87 this shortcut was no longer defined. I went into system settings and defined it again. After this, it worked. ALT+M would minimize a window. However, every time I start the system, ALT+M is no longer defined. The minimize window task has no assigned shortcut. I can define it and it will work until the computer is restarted and it will be gone again.
Problem was caused by some of the config files in .kde/share/config not being writable (permissions issue). After fixing the permissions the key bindings work properly. I do think systemsettings should have displayed a warning message when the config could not be saved so I filed bug 185407 for that.