I could've used this thread last week. I didn't know that WiFi and Bluetooth were on the same frequency. I never had a problem with any other BT headset and WiFi until I got my Jawbone 2. I even had the original Jawbone with my BB 8320. No problem at all with it and WiFi.

I did a little experimenting and came up with a good solution. By setting my 8320 to Mobile Network Preferred, I can keep WiFi on and still use my J2. This works for me because some of my 8320's internet sites only are accessible via WiFi. If I switch to WiFi Preferred, the J2 won't work. Weird, huh?

For the record, the Jawbone 2 is the best BT headset I've ever used.