Running 100 percent of cpu

My Itunes is taking 100 percent of the CPU. Any help ?

I am having the same problem as well! I have just got m y iPad 2 and rushed to get it updated and was forced to update my iTunes to 10.5.0.142 and since then I have not been able to do anything!
I have noticed that iTunes takes about 50% of my CPU, AppleMobileDeviceService takes the other 50% and the AppleBackupService gets a huge ZERO% which is great if you don't want to actually do any backups - but then again it won't let you update without doing a backup.
I have tried the uninstall and reinstall routine, done the tweaking to make iTunes as lean as possible but nothing helps. I am not at a point that I wish I had not spent what I have on apples new money spinner - I could have used it on something that works!
Going by the complete lack of response from Apple on these forums, it is clear that they don't even monitor them at all and don't care about their users at all and it's just their bank balance they are interested in.
Win7 64

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Hello,
just want to know if anybody else has the same problem.
After upgrading to 10.5.1 the process mDNSResponder took up almost 100 percent of CPU power.
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I took a look at my Linux firewall in front of my network and it drops a lot of packages:
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I opened the 5354 port and mDNSReponder is now running normal.
But hey Apple, I don't want computers be registered by Bonjour or something else at your servers.
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Hi
I think I found the cause to my problem and also solved it?
When I investigated my "Console Log" the next message was repeated :
... mDNSResponder[202] Failed to obtain NAT port mapping from router 10.0.1.1 external address xxx.xxx.xxx.xxx internal port 9999
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What have I done (which solved my problem) :
• opened "Airport Utility"
• selected my Airport Base Station
• choose "manual Setup"
• choose "internet connection"
• after that i selected the tab "NAT"
• where I deactivated "Enable NAT port mapping protocol"
• and then I updated my Airport Base station
=> since then, no more the problem and de message disappeared from the "Console Log"
Greetings
Peter

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Go to command Prompt -
(Win 7/Vista) - START/ALL PROGRAMS/ACCESSORIES, right mouse click "Command Prompt", choose "Run as Administrator".
(Win XP SP2 & above) - START/ALL PROGRAMS/ACCESSORIES/Command Prompt
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netsh winsock reset
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iTunes 10.5 for Windows: May see performance issues and blank iTunes Store
http://support.apple.com/kb/TS4123?viewlocale=en_US

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Play, Stop, Pause etc. seem to work fine and I don't get any QPainter errors so you've
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Install itunes - cpu goes to 100 percent and stalls. Uninstalled, tried fixes on internet, reinstalled - same story

Have installed, uninstalled itunes on xp machine and tried all the fixes given in the discussion groups, plus cnet and other internet fixes.....nothing works. After installation of itunes cpu usage goes to 100 percent and itunes stops. Cpu stays at 100 percent until I uninstall itunes. By the number of posts on the internet, I can't believe Apple hasn't addressed this issue with a fix.

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Get to a dos command prompt and type: netsh winsock reset
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Good luck

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Idriz "Minnet" Zogaj, M.Sc. Engineering Physics
Memory Profesional
direct: +46 (0) - 734 32 00 10
http://www.zogaj.se

Hello Idriz!
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