I built a small board with an Atmega168, flashed the Duemilanove bootloader to it using an STK500 (custom entry in the programmers.txt) with the Arduino IDE and tried to use the bootloader with an external FDTI board. So the first time I flash the blink example, it works without problems. The second time I try to upload anything, I get avrdude: stk500_recv(): programmer is not responding. If I reflash the bootloader, it works again, but only once. Can it be because I use an oscillator
(external clock, only on XTAL1) instead of the crystal oscillator
on the standard arduino boards? I tried to burn the bootloader and after that set the fuses using avrdude -p m168 -P /dev/ttyS0 -U lfuse:w:0xE0:m -U hfuse:w:0xdd:m -U efuse:w:0x00:m matching to the external clock. Same effect.
What I also noticed is that the Fade example does not fade but just blinks slowly. o.O
I use Arduino 1.0.2 btw. I remember having similar issues with an Atmega8 a few years back. (Bootloader working only once)