This OS works with my Motorola HS850 mono bluetooth headset WITH SKYPE ! NICE. Now the N800 is really complete. Skype VOIP with bluetooth. Awesome. There is no reason to believe the bluetooth headset won't work with RTCOMM and other apps. I have already tested it with Media Player, Skype, Streaming music from the Web with the browser. It all worked as as it should. I'll install RTCOMM later today and try it with Sippphone, voipbuster, magicjack, and abbeyphone (with the HS850 bluetooth headset), and I'll report back.