We are getting ready to put a device with a mega 8 into production. A batch file is used to program the device and set the fuses for the 8 MHz internal RC oscillator. A few of the devices are not working right because they are set for 1 MHz. The problem is worse than it sounds because after the units are potted, the fuses can not be reprogrammed.
The story is that the batch file can only set it for 8 MHz and these units somehow changed back to 1 MHz. Has anyone had experiance with that?