I have had my macbook pro for three years and this has never happened. The zoom button is not on and command +- has no effect on the current problem. Here is the issue:I turned on the mac today and noticed that any page I open on firefox is too big for the screen. This makes it difficult to maneuver around on web pages. When I open programs as well, the program opens up and is again oddly too large. Any suggestions? I'd appreciate any help with the matter. Restarting the computer twice did nothing.