Hey matmou =]
I have the Sony FE31M, and I had the same message using the advisor in XP. Although I updated the driver by searching on Google for "Toshiba Bluetooth Stack Driver" (I think...), when I upgraded to Vista it installed its' own drivers for Bluetooth, and it seems to work just as well.
I'd do what the advisor says and update it, just to be on the safe side.
Hope this helps =]