hello,
after sometime i'd hear a pop in the speakers and no more sound, i'd have to log out and back in to recover my sound. I'd also hear random pops while using the computer.
I think this has something to do with the speakers and OSX. I have a similar problem when using powered external speakers, however if i use bluetooth speakers or headphones I dont have the popping sound.
I have read on Mac forums where others were having the same problem with Mac's, probably because of no shielding on the speakers cable.
This problem didnt happen under windows or linux on the same PC with the same speakers.