Problem disappears.
What if you remove the jumper?
Problem disappears.
What is you power supply?
Powered USB hub. Consistently provides 5.12 volts.
I've also tried the latest version of WinAVR (20100110).
Problem disappears.
What if you remove the jumper?
Problem disappears.
What is you power supply?
Powered USB hub. Consistently provides 5.12 volts.
I've also tried the latest version of WinAVR (20100110).