Comment 149 for bug 405294

On second thoughts... it's been suggested today that this problem can be caused by some wifi drivers disabling Bluetooth/Wifi coexistence by default. When this happens and you're connected to a 2.4GHz wifi network you wifi signal may drown out the Bluetooth.

So I wonder; can people who experience this problem please let us know what model wifi/bluetooth chips you have? You can probably get that information by running "lspci -k" and maybe from "lsusb".