Sniffing Bluetooth Packets with Kismet and Wireshark in Ubuntu 12.04 Ceres Controls:
Example of how open source can work well, although links need updating:
"I made this guide because was painful for me to follow some tutorials on the web. By basically probe a variety of options of Linux (BackTrack 5 R3 and others) i finally could put the things on the way using Ubuntu 12.04 (Precise Pangolin),"