MacPro Audio Snap-Crackle-Pop (macpro 6-core 3,33GHz)

Hi Everyone,
3 weeks ago i received my brand new 4500$ machine, after working for about 40 minutes there was this really loud POP/Crack trough the speakers, didn't think much of it at first but then after a while same thing happened. It really loud and scared the living daylights out of me...at first i thought it was a problem with my cables or amplifier so i started checking everything, changing cables, unplugging etc. even went this far that i went out and bought new cables but that didn't do me any good. started up my old computer and no Popping sound or weird cracks what so ever, so i took the computer to a friends house and plugged it on this his audio installation (Audio-line out) the same problem occurred after 20min. so without a doubt was it a MacPro issue.
to finally check i even unplugged "every" external device (amplifier,mixer..) and used the internal build in speaker just to check if it had the same issues, and yup same thing with the internal speakers there's this loud Pop also.
Caled Apple explained everything and the offered to ship me a new machine since this one obviously isn't working as it should.
i have received my replacement Mac Pro 2 days ago and guess what, EXACTLY the same problem with this one. One would think that since this one has the same issues its not the Mac Pro but I'm absolutely without a doubt 100% sure it is a the Computer, why because even when nothing is plugged in and i use the internal speakers it still pops, also when i take it (again) at a friends prof. recording studio and test it there ...POP same story.
you can best describe the loud pop i hear with an audio cable that you plug-in or out of a powered amplifier, it gives this loud crack.
The sound studio guy said that he thinks it has to do with the sound chipset waking from sleep or something in that direction
question is are there people here whom know how to fix this (if its even possible to fix) or people whom experienced the same problems?
What do i do now, call Apple again and ask again for a new machine? i mean we are not talking ipods here, its a really expensive machine and it should just work without me getting the living daylights scared out of me 3 times in one hour. I want a computer that works point blank.
Hate to call Apple again, i lost loads of time already and they probably going to suggest the same thing all over again...try installing OSX again, do hardware check...etc. been there and didn't do me any good.
what should i do and does anyone know how to fix this extremely anoying problem
hope to get some reply's as i would really appreciate it

Mac Pro (6-core) 3.33GHz here too, running OS X 10.6.4. Same issue. However mine happens ever so randomly. Sometimes it doesn't happen for a whole 3hours then suddenly, for a split second there's that pop/crackle sound. I used to have the same speakers plugged in a mid-2009 15" MacBook Pro and it never had that problem. To think that i spent over £3000 on a high-end desktop workstation makes me wonder why the **** are they even priced ever so ridiculously?? I mean if it has such a pathetic problem such as this. Quality control isn't what it used to be for Apple it would seem. Glad that I'm not the only person with this problem, and I'm sorry to hear that this has happened to many of u who caved in nearly 2 months salary (I may be on scholarship, but still, money is money) to buy a high-end workstation like this.
My specs are in my sig at the bottom. Did all the necessary updates, except for iTunes (running on 9.2.1) but I dont think iTunes 10 addresses problems like these. Definitely not an iTunes problem because even if there's nothing playing there's still that pop sound. Thing is, mine doesn't happen so frequently, but it does happen on occasion, but for a +£3000 machine, IT'S UNACCEPTABLE!! Get it together Apple! Plus this is not my only Mac Pro issue, got a Kernel Panic the other day because I was tethering my iPhone 3GS 32GB (iOS4.0) via USB to my Mac Pro for internet and the kernel panic grey screen came up. Lesson learned, i wont be USB tethering my iPhone EVER AGAIN, but I'm not going to refrain from using my audio on my Mac Pro, am I right? Anyway, this rant is rather annoying, I sure as **** hope that it's just a software issue and that an update SOON will help resolve this!
Have any of u guys reported this issue to Apple? Because if enough of us who spent copious amount of money on this report the issue, they are FORCED to find a fix. Because I dont wan to have to ring Apple and be on hold for hours before I have someone tell me "ye...just send it back to us". Because: a) I'm not going to post it to them, takes too much **** time. b) Even if i were given a new desktop, I dont want to have to start from scratch, unless they're willing to migrate all my data on to the new desktop and everything will be as my last desktop was. AND c) I know i said this enough, but this is an expensive desktop and issues like this shouldn't even be roaming around...
Please note, my Mac Pro is ONLY 3days old.
I hope again that this is SOFTWARE/FIRMWARE related. and an update should fix this!
Message was edited by: progressia

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