C10LE & Xendesktop 5.5. Usb redirection problem

C10LE & Xendesktop 5.5. Usb redirection problem

Hi to all 

I have the problem with my thin client!

I have:
C10LE 7.1_033
Xendesktop 5.5
Windows 7 SP 1 with VDA agent 5.5.
Pooled and dedicated machines for me (2 total)
and some USB flash drives (3 total)

All work fine, I delivery Windows 7 on my client,
i connect my flash in client, and i don't see drive in my computer !!
whats the problem???

ok i go out from win 7 and i see thin os, i disconnect and the connect my usb flash, and i see, thats thin os detected my flash, Ok!
I Once again delivery Windows 7, and i see the flash in my computer!!!
I can copy files, etc...
Ok I am disconnect flash and connect again in windows 7, and i don't see flash !!! Whats wrong?

Ok i am go to citrix policy and apply usb redirection to all users.
Nothing!
Any machine, pooled, dedicated,
Clear installation XD 5.5, WIN 7 SP1, VDA 5.5.
Any ideas? Thanks!