After upgrading to 2.1 my moment shuts down constantliy. I am unable to use the power on/off button to turn it back on. I must remove and replace the battery to turn it back on. I seem to have no other problems at this time. I have re-installed 2.1 three times now, on the third try I added no additional apps hoping this would be the problem but to no avail, it still shuts off by itself. Help would be appreciated.