Gwibber does't work.

This is log:

booch@alexlinux:~$ gwibber
** (gwibber:5455): WARNING **: Trying to register gtype 'WnckWindowState' as enum when in fact it is of type 'GFlags'
** (gwibber:5455): WARNING **: Trying to register gtype 'WnckWindowActions' as enum when in fact it is of type 'GFlags'
** (gwibber:5455): WARNING **: Trying to register gtype 'WnckWindowMoveResizeMask' as enum when in fact it is of type 'GFlags'
No dbus monitor yet
Updating...
Traceback (most recent call last):
  File "/usr/bin/gwibber", line 67, in <module>
    client.Client()
  File "/usr/lib/python2.6/dist-packages/gwibber/client.py", line 447, in __init__
    self.w = GwibberClient()
  File "/usr/lib/python2.6/dist-packages/gwibber/client.py", line 58, in __init__
    self.setup_ui()
  File "/usr/lib/python2.6/dist-packages/gwibber/client.py", line 98, in setup_ui
    self.stream_view = view_class(self.model)
  File "/usr/lib/python2.6/dist-packages/gwibber/gwui.py", line 340, in __init__
    self.navigation.render()
  File "/usr/lib/python2.6/dist-packages/gwibber/gwui.py", line 309, in render
    small_icons=self.small_icons)
  File "/usr/lib/python2.6/dist-packages/gwibber/gwui.py", line 267, in render
    self.web_settings.set_property("default-font-size", int(font_size))
ValueError: invalid literal for int() with base 10: '8.5'

# uname -ar
Linux alexlinux 2.6.32-24-generic #39-Ubuntu SMP Wed Jul 28 06:07:29 UTC 2010 i686 GNU/Linux

# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 10.04.1 LTS
Release: 10.04
Codename: lucid