Inadvertently double-clicking while holding the option key(on a mac) switches the clone tool to sampling
Please set up a way to disable this or configure it with an additional key command (shift-option-doubleclick) so that an action that is normally performed hundreds of times does not reset the tool. We all like to sleep from time to time, but falling asleep every time we blinked twice in succession would be a problem. Double-tapping the brakes and shifting your car into hyper-drive could be problematic. Better user interface please.
I first requested this from an Adobe rep at a Seybold show in 1995. Sorry to bug you again.