Yes, good point. For frequencies we should also add an option like "auto" or something like that when the frequency is managed by a daemon or a governor such as ondemand or conservative. 

Another option could be to disable the current frequency/governator menu item, so the user has both a visual feedback of which item is selected and he cannot reselect the same freq/governator.

That would be really confusing. Most of time users don't know which governor/frequency is currently active. Disabling settings without reason gives the user the feeling (s)he cannot control the computer.

(In reply to comment #3)
> That would be really confusing. Most of time users don't know which
> governor/frequency is currently active. Disabling settings without reason gives
> the user the feeling (s)he cannot control the computer.
> 

I agree, I think that using radio button menu items is clear enough, much better than hiding options. 

Btw, the icons in the frequency menus can be left out too. A radio button would do here, too. The icons will show up on the panel itself anyway.

I've just rewriten the popup selector. It's fixed in head now.