I have a new macbook pro. Scrolling, i.e. 2-finger, on the trackpad often, but randomly, results in font size changes (e.g. in Safari, mail, etc.); in word and powerpoint it often changes a word or paragraph to subscript or superscript. This also happens often with cursor movement on the trackpad, i.e. single finger sweeps. It appears that trackpad usage is randomly triggering command+ or command-. Has anyone seen this? It happens more frequently with fast motions. Needless to say this can be extremely frustrating, as it happens very frequently.