Ubuntu Device Database gui hangs just after sound card check submission.

Same experience here (both on Dapper and Edgy).

~$ /usr/bin/python /usr/bin/hwdb-gui
set[1]: Audio Test
doing test
set[1]: Video
Xlib: extension "RANDR" missing on display ":0.0".
Traceback (most recent call last):
  File "/usr/bin/hwdb-gui", line 153, in <lambda>
    self.advance.connect("clicked", lambda w: self.adv(self.xmlfile))
  File "/usr/bin/hwdb-gui", line 583, in adv
    set[2] = set[2]+self.get_xorgdata()
  File "/usr/bin/hwdb-gui", line 256, in get_xorgdata
    return retval
UnboundLocalError: local variable 'retval' referenced before assignment

Steps:
- start app
- click Forward button
- hear sound (green arrow points Yes option)
- click Forward button

Result:
See attachment

Thank you for your bug. Marking duplicate from bug #17595 which has a fix for the bug