IPod Touch 4G Problems

Okay so i was using my ipod then it started to act weird and just kept doing a reset all on its own over and over again. and i tryed to resore it but it didnt work and now its stuck on recoverymode. And it still connects to itunes and it recognizes the ipod in recoverymode and says i need to restore. I select restore and update and it begins to extrat software and after that it stays verifying i pod restore with apple and such then i get a message saying "The iPod "iPod" could not be restored. An unknown error occurred (21). Please help.

Error 20, 21, 34, 37: These errors typically occur when security software interferes with the restore and update process. If you are using a PC, follow this article to resolve this issue.
Above from:
http://support.apple.com/kb/TS3694#error21

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    Message was edited by: Alex169853

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    poninaine wrote:
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    Is the firewall enabled on the Mac mini? If so, you will need to enable Personal Web Sharing on the Mac mini. This punches a hole through the firewall so that the normal web browsing port is accessible via the shared connection.

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    Hello to potential helpful people,
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    Restore your iPod Touch, as described here:
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    Do not restore from backup.
    Recover your content back by simply syncing with iTunes do not restore.

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