A few days ago I thought my headphone jack had gone out, as I could only hear sound on the left side. However, I've noticed that there is still sound on the right, just extremely faint.
I've checked my sound preferences, tried different headphones, and the sound is still coming out of the internal speakers just fine. Do I have faulty hardware, or is this a weird software bug somewhere?
I also recently upgraded my RAM - could that have done something? Or perhaps I nicked something while replacing it - I would hope not.


15" Macbook Pro, Early 2011.
Mac OSX 10.8.3
2.3 GHz i7, 16GB RAM