Having issues connecting iPhone for testing Xcode 5.0

I am having issues connecting an iPhone 5 for testing and debugging in Xcode 5.0. When the device is connected and Xcode opens, the system hangs.

Mac Mini Running OSX Version 10.8.5, 2.5Ghz Intel Core i5 processor, 4GB 1600Mhz DDR3 RAM. What can I do to resolve this? The Mac goes to a totally unusable state when the device is connected and Xcode is open. The problem persists only if Xcode is open while the device is connected. There is no problem in connecting the device or in working of Xcode independantly. I don't even have to run the program on the device for the Mac to hang, just connect the device, that is all.