after I received my new mbp (3 weeks ago) I found out that my right speaker was dead. (It wasn't a software problem). It's a desktop replacement so I usually have it plugged into my external speakers. I played with the config and only the internal speakers were not working. Well today it came to life for the first time. Each speaker left & right have the same volume level (some have problems with static from the right & low volume). So what the heck happened? I have been carrying it around to and fro class lately. Should I open it to check the connections? Other than this my mbp has been flawless.