Another thing I noticed, when using the aftermarket wall-plug to USB adapter, even with the Samsung cable (USB to micro) allthough it does charge, the touch screen is very very sluggish. Takes several fast swipes just to get the phone to unlock. Can barely even type a word. This also occurs on my GF's HTC Surround. Weird indeed.
Toshiba E740, AT&T 8125, AT&T 8525, HTC Fuze and now ...Samsung Focus!