[ubuntu] Can't use CTRL mousewheel to zoom in firefox

view story

http://ubuntuforums.org – It stopped working a while back which was annoying. It has become more annoying as time has passed. I've now reached the point where I have GOT to fix this because it is driving me nuts. CTRL + still works, but since I'm on a laptop this requires a 3 key combination. That is because I have no numpad and need a shift key or function key to access the symbol + which means I need to stare at the keyboard to find the three keys needed to do it. CTRL mousewheel was very natural and I've been using this since forever. I am not sure of the cause but suspect something is going on with the CTRL key. (Hardware)