My macbook pro starts to pop after I upgraded to Mountain Lion, what can I do?

Hi guys,
As the title said, my MBP 13" late 2011 starts to have popping sound coming out from speaker a while ago.
It just pop every few minutes and I am very worried.
I did a few research and it seems like there's something to do with the hard disk.
note that this happened right after I upgraded to Mountain Lion.
comfort me!!!
Thanks for helping.

Hey Samuraijin
/Hug to start with
Well when you did the upgrade the OSX ML uses your drive alot. As you said the popping sound from your research its comming form the drive. if that is the case. Check your disk with disk utitlities just incase too see if the drive is still ok. If its all Green your good if its red it might need replacement.
Note that Popping sound is usually a hardware problem or optical audio problem when using external speakers. instead of internal ones so becareful. My advice would be too be let it slide still the next patch if disk utilities says your drive is fine (Usually after 2 weeks of main realese). After that if its still there you have to get the puppy in for a checkup.
Hope i was able to comfort you in some way

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Please read this whole message before doing anything.
This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
Third-party system modifications are a common cause of usability problems. By a “system modification,” I mean software that affects the operation of other software — potentially for the worse. The following procedure will help identify which such modifications you've installed. Don’t be alarmed by the complexity of these instructions — they’re easy to carry out and won’t change anything on your Mac.
These steps are to be taken while booted in “normal” mode, not in safe mode. If you’re now running in safe mode, reboot as usual before continuing.
Below are instructions to enter some UNIX shell commands. The commands are harmless, but they must be entered exactly as given in order to work. If you have doubts about the safety of the procedure suggested here, search this site for other discussions in which it’s been followed without any report of ill effects.
Some of the commands will line-wrap or scroll in your browser, but each one is really just a single line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, and you can then either copy or drag it. The headings “Step 1” and so on are not part of the commands.
Note: If you have more than one user account, Step 2 must be taken as an administrator. Ordinarily that would be the user created automatically when you booted the system for the first time. The other steps should be taken as the user who has the problem, if different. Most personal Macs have only one user, and in that case this paragraph doesn’t apply.
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☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
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Triple-click the line of text below to select it:
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Copy (command-C) the selected text to the Clipboard. Then click anywhere in the Terminal window and paste (command-V). Post the lines of output (if any) that appear below what you just entered. You can do that by copy-and-paste as well. Omit the final line ending in “$”. No typing is involved in this step.
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My macbook pro starts to pop after I upgraded to Mountain Lion, what can I do?

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