Mine are also running ext4. I haven't investigated it too much, but it happened 2-3 times during development (quite frustrating when you haven't backed it up fo

Mine are also running ext4. I haven't investigated it too much, but it happened 2-3 times during development (quite frustrating when you haven't backed it up for a while). On another project we're running 30 Pis simultaneously and before we told the operators to shut them down properly each evening we had at least one corruption a week (which wasn't too much of a problem since we always had some provisioned cards on hand). There seems to be an UPS solution for the Pi already [1]. [1] http://www.piups.net/ http://www.piups.net/