I've had my MacBook Pro 13" for over 2 years now. I got the Bose Companion 3 speakers in November of 2010, and they have been nothing but amazing! I upgraded to Lion and I've noticed that sometimes the MacBook changes the balance all the way to the right. Then, I have to go into System Preferences to change the balance back. Has this happened to anyone else? If so, how did you resolve the issue? Thanks!