Verification error; content mismatch on new Uno R3 board

Hi,

I've got a brand new Uno R3 board, my previous sketches uploads, but immediately crashes with the error below. I've even uploaded a blank sketch as a test and still get the same error.

My other UNO board does not do this, what am I missing here?

Sketch uses 444 bytes (1%) of program storage space. Maximum is 32256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.
avrdude: verification error, first mismatch at byte 0x00af
         0x81 != 0x91
avrdude: verification error; content mismatch
avrdude: verification error; content mismatch

Did you try to use another USB cable, and another computer port?

Arduino Verification Error ~ Restoring the Arduino Bootloader