I have a MBP 13" that I purchased when they were first announced. Everything has been great except for 1 problem. The problem has always been there since I got it (it was purchased online BTO). The problem has to do with the sound. When there is nothing plugged into the Audio Out, the internal speakers work perfectly, no problems at all. When I plug something into the Audio Jack, it works fine for about 1 min, then it starts to "click" and "cut in and out". So it sounds like somebody keeps pressing "mute then unmute, mute then unmute etc). Each time the audio cuts out for about 1 second and you hear a small "click" sound. On some occasions it doesnt output audio at all. The volume thing in the status bar is greyed out. I tried system prefs and everything it greyed out. This ONLY happens when I use the Audio Out port. I tried different speakers, headphone etc. I also called AppleCare and reset some stuff they told me to do over the phone. That helped for about an hour, then the problem came back. It comes to a point where you cannot even listen using headphone, I always end up using the MBP speakers. When you do a reboot it works properly for about 1 min and then it starts happening again. What could be the problem? Should I take it to the Apple Store? Also would this count as a major problem (people say 3 problems then new computer)? I think its something with the sound card which seems pretty major to me. Can someone please share if they have anything similar! Thanks!