So out of curriosity what is XCode doing when you plug in a device and it takes for ever becuase it says "Processing Symbol Files"...
Processing Symbol Files
Xcode downloads specific iOS (debug) symbols from the device (processor specific, etc.) which are also used to 'symbolicate' crash reports.
Xcode is busy talking not only to your device about symbol files, it may also be phoning home, where there is a laundry list of topics being discussed.