As far as we can tell, the "hang" is to do with the "ohmigosh, I've lost power" interrupt, which casues the empeg to save its state to flash - basically, if it gets a false one of these, the empeg stops (ie false=voltage drops below 10v but not to the point where the CPU reboots). We're having problems replicating the situation in our own cars, but we have a couple of ideas which will hopefully make it into the next beta which may well address this problem.

Hugo