Version: 4.4.1 (using KDE 4.4.1) OS: Linux Installed from: Ubuntu Packages The plugin shortcuts (I mean the ones assigned to the actions in the left-most button of the main toolbar) do not appear in the config dialog. This can lead to confusing collisions with custom shortcuts.
After my various fixes from today, these actions do appear in Configure shortcuts here (trunk, future kdelibs-4.6) I was surprised that they had no default shortcut though, I thought Alt+1/2/3/4 used to switch between kontact plugins; but apparently not. Please reopen if you still have the bug with 4.6.
David, FYI: the shortcuts to switch between kontact plugins is Ctrl+1/2/3/4 I tested this works in e35 and kontact4.4 -- both version switch to the Contacts plugin with Ctrl+3 for example.