BackOff is a freeware, extremely simple to use application for Windows & Mac OSX that will help you speed-up the Sync of your iPhone, iPod Touch and iPad.
As large amount of data storage can lengthen iTunes Sync, turning off the iTunes automatic full backup feature can really speed-up your iTunes Sync.
As I said above BackOff is a very simple to use application. Just a single click will turn off/ and or on iTunes’s automated iPhone/iPod/iPad backups.
BackOff can be downloaded free at source for Windows and Mac OSX.