Version: 4.0.0-2 (using KDE KDE 4.0.0) Installed from: Debian testing/unstable Packages OS: Linux When expose effect is enabled (with ctrl + F9) when you press ctrl + F12 to display plasma dashboard and after that without hiding dashboard you press ctrl + F9 it crashes plasma/kdm/X? One of these, because you have to relogin after that.
I can't reproduce this with trunk, but I guess it would be an issue with the expose effect if it's a KDE issue at all.
If X crashes, then it's X bug, not KDE.