More information...
It seems to be related to the category of the shortcuts.
For example:
If I set (say) Super-D as a shortcut in one of the main categories (e.g. Launchers > Launch Terminal), then the Super key works.
But if set in the Custom Shortcuts, then the Super key will not work.
See http://ubuntuforums.org/showthread.php?p=11922661#post11922661
More information...
It seems to be related to the category of the shortcuts.
For example:
If I set (say) Super-D as a shortcut in one of the main categories (e.g. Launchers > Launch Terminal), then the Super key works.
But if set in the Custom Shortcuts, then the Super key will not work.
See http:// ubuntuforums. org/showthread. php?p=11922661# post11922661