No Sound after 30 mins of using

Hello,
I have a problem, after using my laptop for 30 minutes the sound just stops working there is no sound not even basic sounds like when an update window pops up, can anyone tell me what to do, the laptop is completly new !

Welcome to the forum!
It could be a hardware problem or operating system problem. If it were me I would do a recovery and restore the system back to it's original condition. That would at least eliminate any possibility of an installed piece of software or quirk in the OS shutting down the audio. And since the laptop is new, if you call tech support, they will probably have you do a recovery as part of the trouble shooting process anyways. At least this way it is already done. Just be sure to back up any important files before doing the recovery since everything will be erased during the recovery process.
If a recovery didn't resolve the problem then it is very likely you have a hardware problem. Possibly after 30 minutes the system heats up sufficiently to cause an open circuit on the board. Since the system is new, call tech support for a replacement. Again, backup important files since you would be sending this laptop back in.
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● Lenovo Ideapad Z570 w/ Win 7 & Win 8.1 Dual Boot ● Lenovo Yoga 3 Pro w/ Windows 8.1 ● Toshiba A75-S206 w/ Win 7
● IBM Thinkpad T-23 w/ Win XP ● IBM Thinkpad T-22 w/ Win XP • As well as multiple desktops dual/triple booting XP, Vista and Win 7.
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I use this Macbook Pro 2011 daily with 10.8.2 and with no real changes to speak of (ie installing software) i've started experiencing freezes after about 30 min of use.
Programs start becoming unresponsive
Beachball appears.
System freezes until restart.
No crash log as it doesn't actually crash just freezes.
I checked the log and saw that a geek tool couldn't find a file so i shut that down and restarted in case it was the cause. It happened again though and i copied this as the last few messages before i had to restart.
if anyone can shed light on what's suddenly causing this it would be greatly appreciated.
2012-12-10 1:41:26.436 PM com.apple.usbmuxd[91]: _handle_timer heartbeat detected detach for device 0x11-10.0.1.18:0!
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2012-12-10 1:42:49.061 PM mdworker[642]: Unable to talk to lsboxd
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2012-12-10 1:42:49.146 PM sandboxd[643]: ([642]) mdworker(642) deny mach-lookup com.apple.ls.boxd
2012-12-10 1:42:49.000 PM kernel[0]: Sandbox: sandboxd(643) deny mach-lookup com.apple.coresymbolicationd
2012-12-10 1:43:46.850 PM com.apple.usbmuxd[91]: _handle_timer heartbeat detected detach for device 0x12-10.0.1.18:0!

If you have more than one user account, these instructions must be carried out as an administrator.
Launch the Console application.
Step 1
Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left.
Enter "BOOT_TIME" (without the quotes) in the search box. Note the timestamps of those log messages, which refer to the times when the system was booted. Now clear the search box and scroll back in the log to the last boot time when you had the problem. Post the messages logged before the boot, while the system was unresponsive or was failing to shut down. Please include the BOOT_TIME message at the end of the log extract.
Post the log text, please, not a screenshot. If there are runs of repeated messages, post only one example of each. Don’t post many repetitions of the same message. When posting a log extract, be selective. In most cases, a few dozen lines are more than enough.
Please do not indiscriminately dump thousands of lines from the log into a message.
Important: Some private information, such as your name, may appear in the log. Edit it out by search-and-replace in a text editor before posting.
Step 2
Still in Console, look under System Diagnostic Reports for crash or panic logs, and post the entire contents of the most recent one, if any. In the interest of privacy, I suggest you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header of the report, if present (it may not be.) Please don’t post shutdownStall, spin, or hang logs — they're very long and not helpful.

Finder High CPU Usage 108% after 5 mins of use

So this is my issue, something odd is happening, I am trying to see where all the work is happening or if it is a bug. No other software seams to hog any significant space, and I am using Photoshop.
I've done a sample of the process as I hope someone can understand it and tell me where the issue is?
Here is the inspect too
https://dl.dropboxusercontent.com/u/82899493/screenShots/Inspect.txt
I've tried disabling the creation of the .DS_store files that had no effect.
also turned of the icon preview in Finder > View > Options but still nothing,
All I can do is relaunch finder and carry on, which is not the best option.
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Matt

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.
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Launch the Terminal application in any of the following ways:
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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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Step 1
Triple-click the line of text below on this page to select it:
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Step 2
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{ sudo launchctl list | sed 1d | awk '!/0x|com\.(apple|openssh|vix\.cron)|org\.(amav|apac|cups|isc|ntp|postf|x)/{print $3}'; echo; sudo defaults read com.apple.loginwindow LoginHook; echo; sudo crontab -l; } 2> /dev/null | open -ef
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Step 3
{ launchctl list | sed 1d | awk '!/0x|com\.apple|org\.(x|openbsd)/{print $3}'; echo; crontab -l 2> /dev/null; } | open -ef
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Step 5
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No Sound after 30 mins of using

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