vbox 2.10 on 11.1 unable to detect usb

I can get thumb driver to work on vbox 2.10 on opensuse 11.1

on previous beta version of 11.1 I try the solution in here VirtualBox USB Support - openSUSE and it work .

but now not working again on vbox 2.10 .

any solution?

never mind found the problem .

I forget to include the vbox group to the user.lol!