Confirm source of Bluetooth problem?

[TurboFool]

I got a new Bluetooth headset (Samsung WEP200) a couple of days ago, and I'm having a major issue. The headset itself seems to work well overall. Audio quality's pretty good, size is great, comfort is... well, I'm getting used to it. Anyway, the first day I received a phone call, had a nice long conversation, and everything was good. Next call I received, within about 5 seconds of answering the audio suddenly went completely dead. I couldn't hear the other person, and they apparently couldn't hear me. Hung up, called back, still no sound. Turned off hands-free while in the call, and no sound on the handset, either, even through another attempted call. Finally had to soft-reset the phone, and then everything (including the headset) worked perfectly. A few hours later, same thing happened.

I then built a new ROM and tried again. Today everything worked great for several hours and several phone calls, and then as I answered another call, boom, silence. Same pattern, including the lack of sound even with the headset turned off and using the handset's own speaker.

I'm hoping someone can confirm for me whether the problem I'm having is caused by WM6.1, no2chem's ROMs (or the specific build), the kitchen, or something else I may not be thinking of.

I started with a ROM cooked from the 5060 basekit, then when I rebuilt I worked from the official 5060 kitchen with no improvement. I've heard there are Bluetooth issues in WM6.1, but I haven't gotten a clear picture of WHAT specific problems people are having. So far I've been quite successful in connecting via Activesync with Bluetooth and syncing to my Vista machine and browsing my phone from it, so that's working for me. But this sudden losing all phone audio thing is major. If it's just WM6.1 I guess I'll have to consider cooking something based on 3.35 and foregoing the things I've gotten used to in the new OS. If it's the kitchen, then I can always go back to uncooked no2chem ROMs and manually installing my applications. I just want to see if someone has a solid answer before I waste more time.