access USB devices from VirtualBox

[L]

Hi

I have F10
Linux  2.6.27.29-170.2.79.fc10.x86_64 #1 SMP Fri Aug 14 20:49:37 EDT
2009 x86_64 x86_64 x86_64 GNU/Linux

and installed a virtualbox

Name        : VirtualBox                   Relocations: (not relocatable)
Version     : 3.0.4_50677_fedora9               Vendor: Sun Microsystems, Inc.
Release     : 1                             Build Date: Wed 05 Aug
2009 05:29:19 AM EST

and WinXp as a guest PC. Things are running smoothly except access  to
USB devices. I added the user to vboxusers group.

When plug a USB in, I can see this device from VB window Devices ->
USB Devicves. But the USB device is grayed out. There is no way to
access it.

I have googled this for fix. some sugegsted this is permission
problem. but I tried a few things, butall failed.

hope some one offer a fix?

Best

Y