Mini6410 + USB Bluetooth

hi@all

my mini6410 is running with the friendlyarm provided kernel 2.6.38
and a rootfs from buildroot. i attached a USB Bluetooth Dongle and added
all necessary drivers.
I can find the bluetooth device when using the hciconfig tool from BlueZ
but if i do a "hcitool scan" it shows "scanning" for ~15sec but didnt find
any device? 
if i use the same usb bluetooth dongle on ubuntu (host pc) and do the
hcictool scan i can find all my bluetooth devices...

somebody ever had a mini6410 with working usb bluetooth?
what kernel did you used?

tried another bluetooth dongle, now i can connect to my android phone (htc
desire s) :)

if somebody is interessted, i'm using this now
http://www.bee-wi.com/nano-bluetooth-usb-adapter-bba200,us,4,BBA200-B0.cfm

I am interested in what drivers you used.