Lately I'm having some problems with the macbook trackpad. Some applications freeze when scrolling. I have noticed this problem with Chrome, Firefox and Evernote. Safari and Picasa still work well.
I've tried scrolling with a USB mouse and they all work ok, so this it seems indeed a trackpad issue.
I'm not sure, but maybe some system configurations were made by these tools and they remained even after the removal of these tools. So, my question is: how do I reset my configurations, specially those regarding trackpad?