Version: 4.5 (using KDE 4.5.3) OS: Linux While logged in KDE 4.5.3, alt + F1 combination doesn't work as it used to in KDE 4.4 series. Alt + F2 works though. Reproducible: Always
'Alt + F1' can be defined in systemsettings > global shortcut > Plasma-Desktop-Environment or in K-Menu settings > shortcut.
also in the kickoff applet settings, keyboard shortcut section. I don't know why this was unassigned, but sadly is a thing that we can't really do anything about it