I have exactly the same issue with my hexapod. I'm using 2 self made PCB's with ATmega328's (with duemilanove bootloader), connected to each other over I2C. You can see the servos twitch in this video: Bajdupod 9G with RGB leds on Vimeo
I have exactly the same issue with my hexapod. I'm using 2 self made PCB's with ATmega328's (with duemilanove bootloader), connected to each other over I2C. You can see the servos twitch in this video: Bajdupod 9G with RGB leds on Vimeo