I believe I've found an issue with Linux trying to communicate with the ArduinoBT board. The issue is summarized here http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1180879548. I have successfully communicated with the board from a Mac Mini and I have communicated with an Arduino NG (via usb) from the Linux machine. The bluetooth connection seems to have been established successfully but I keep receiving programmer not responding errors (both from avrdude and uisp). I have been unable to find an example of anybody within the forums who has successfully connected to an ArduinoBT board from Linux, so I'd say there is a fair chance this isn't just a misconfiguration on my part (although obviously I haven't ruled that out). Has the ArduinoBT board been tested with a Linux client ?