Description of problem:

When I want to add a physical USB device to the guest, the virt-manager presents all devices as "0000:0000 USB Raw Device Access"

But lsusb gives correctly:

Bus 003 Device 001: ID 0000:0000  
Bus 001 Device 001: ID 0000:0000  
Bus 004 Device 001: ID 0000:0000  
Bus 005 Device 002: ID 1546:01a5 U-Blox AG 
Bus 005 Device 001: ID 0000:0000  
Bus 006 Device 001: ID 0000:0000  
Bus 007 Device 001: ID 0000:0000  
Bus 008 Device 001: ID 0000:0000  
Bus 002 Device 001: ID 0000:0000 

And even virsh reports the device:

virsh # nodedev-list --cap usb
usb_device_0_0_0000_00_1a_0
usb_device_0_0_0000_00_1a_0_if0
usb_device_0_0_0000_00_1a_1
usb_device_0_0_0000_00_1a_1_if0
usb_device_0_0_0000_00_1a_2
usb_device_0_0_0000_00_1a_2_if0
usb_device_0_0_0000_00_1a_7
usb_device_0_0_0000_00_1a_7_if0
usb_device_0_0_0000_00_1d_0
usb_device_0_0_0000_00_1d_0_if0
usb_device_0_0_0000_00_1d_1
usb_device_0_0_0000_00_1d_1_if0
usb_device_0_0_0000_00_1d_2
usb_device_0_0_0000_00_1d_2_if0
usb_device_0_0_0000_00_1d_7
usb_device_0_0_0000_00_1d_7_if0
usb_device_1546_1a5_noserial
usb_device_1546_1a5_noserial_if0
usb_device_1546_1a5_noserial_if1


Version-Release number of selected component (if applicable):
virt-manager-0.6.1-13.el5.centos
python-virtinst-0.400.3-11.el5
libvirt-0.8.2-15.el5_6.4
libvirt-python-0.8.2-15.el5_6.4


How reproducible:
Always

Steps to Reproduce:
1. Plug in a USB device
2. Try to connect this device to a virtual machine using virt-manager
  
Additional info:

If I add this device editing the .xml file by hand, it works well in the guest system.