In Photoshop CS6, the default behavior of depressing the spacebar as a shortcut for the Hand tool was working as expected, then stopped for no apparent reason. I have rebooted, closed browsers, shut down all other applications and deleted preferences and the problem persists. The spacebar works properly elsewhere, including Photoshop CS4.
Is there a keyboard shortcut setting I'm missing (I've checked Edit -> Keyboard Shortcuts and can find nothing for the spacebar, and can not add it to the Hand tool).
This is on OSX Lion 10.7.4