My MacBook is a mid 2007 model. Not sure how long this has been going on for but my audio frequently stutters and it screws with the video sometimes and the cursor is unresponsive as well. I have to take my speaker cable out (sometimes more than once) in order for the audio to fix itself. I'm going to the Apple store tomorrow because this is really starting to bug the crap out of me. What do you guys think is wrong with it?