I'm having similar issues, sometimes I have the same message as terodeg or like the print screen below.
I've Upgraded the Wireless card on my VAIO SVS13 and the wifi is great compared with my older Atheros!
However I lost the blutooth funcionality..... I basically use it for pointing devices (mouse).
As an alternative I'm using an USB mouse, but's is annoying to know that I could use Bluetooth and free one USB port (I Only have 3).
I tried many drivers and alternatives but I still can't use the Bluetooth like many other users here.
