AVR-Chat

Hello there


I'm having some weird issues with an Atmega8 based board where the  
processor won't start the program unless the
avrisp dongle is connected.


You can see the circuit here http://www.potemkin.org/uploads/Pid/ 
arduino_rs232_v2.png

the rs232 interface part is not installed.

I've checked and the fuses are programmed correctly (there are about  
1500 usb boards that we sold with the same fuse settings)

it also happened a few times with some usb boards that when they are  
powered via the external power supply they have troubles starting up  
while when powered by the USB they work correctly.


do you have any suggestions?


thanks!