mDNSResponder.  On the iPhone.  Why?  It isn’t currently being used for anything is it?   But the files are there.  Wireless printing?  iChat coming?  The Apple Social?  Maybe….maybe not.
 

Most likely, though, it will allow wireless syncing to iTunes and hopefully allow you to play your iTunes library around the house on your iPod touch and iPhone.
 
On Apple, Ink.
 

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