Jun 13, 2011
The problem is that KLauncher seems to periodically lose the ability to launch programs. Sometimes an error dialog pops up: "Error launching /usr/share/applications/kde4/ksysguard.desktop. Either KLauncher is not running anymore, or it failed to start the application." (I verified that KLauncher is in fact still running). Other times, the pointer icon bounces and the placeholder shows up in my task bar, but then it all goes away without any error.
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There doesn't seem to be any pattern as to what's running when this happens, or how much memory is in use, or what I launch, or anything else. Sometimes, if I start closing apps that are already open, then the thing I tried to launch will start up. Other times, I have to actually log out and back in before I can get anything to start. Other than that, the desktop continues to behave normally. Nothing seems to be locked up or anything. It's very strange.