I'm running Maya on a Mac and have the one button magic mouse. Previously I've been using maya 2010 where control-clicking on an attribute would open the popup menu where I could set a keyframe for it.
Now I'm using 2012 and control clicking doesn't work at all in the attribute editor. It doesn't seem to be a hardware issue because when I try to the control click in the channel box it works fine and I have the one button mouse option selected in the preferences.
What I'm currently trying to do is key the sim-rate-scale of a fluid and noticed that this particular attribute doesn't come up in the channel box which makes it impossible for me to key it entirely unless I get this fixed somehow.