Bluetooth Serial Out problems

I've recently begun trying to stream analog data out of my arduinoBT to the 09 environment (on a macBook and/or a new iMac). I've managed to solve all of my other problems except the serial streaming out problem. Every time I hit the "serial monitor" box my whole system (either computer) freezes...

I don't know if others have experiences this problem - can someone please offer me some guidance?

Advanced thanks.
(note that I previously had an older usb board stream data to my same machines without a problem)

have you tried it with "screen" in a terminal? screen /dev/cu.BT-device 115200 where BT-device is the BT port for the arduino.