This is a very known problem with the RPI that reboots too often it damages the SD cards.  The last batch of 30 RPi's I've gotten in the last 6 months at least 10 have this problem.  The fix to keep it going is to add boot_delay=1 to the config.txt, til it blows completely.  This is common, or I just have bad RPi Karma.  either way  adding boot_delay=1 to your push will solve lots of problems people are having with them, and will not hurt people without it.