Not sure, sometimes (software) revision number is not always fully accurate... I mean sometimes, the board, the chips on it, the firmware changes, but because of laziness, or time shortage, the "software" revision number are not updated correctly. And are we sure that this revision number reflect all the subtle differences that a complete motherboard may have ? It's quite unusual that so much people have the same exact number...

I'm not an i2c expert but maybe we can use it to query the revision of all ship. If we got the same result, then it must be a software problem.. As I said, I made the test with a new flashed pr1.3 + power kernel (and of course backupmenu)