Description of problem:
The keyboard attribute of "OK" button dose not work for VNC connection authentication

Version-Release number of selected component (if applicable):
virt-viewer-0.4.1-7.el6.x86_64
python-virtinst-0.600.0-5.el6
virt-manager-0.9.0-7.el6
libvirt-0.9.4-19.el6
qemu-kvm-0.12.1.2-2.196.el6.x86_64

# uname -a
Linux wjw.nay.redhat.com 2.6.32-207.el6.x86_64 #1 SMP Mon Oct 10 01:46:09 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux

How reproducible:
always

Steps to Reproduce:
1. Assume there is a running guest.
# virsh list --all
Id Name                 State
----------------------------------
 26 6.2                  running

2. Set password for VNC server of guest 6.2 from virt-manager.
3. Run virt-viewer to connect guest 6.2.
# virt-viewer 6.2
4. Authentication required windows pop up and type the password for VNC connection.
5. After type the password, click Enter key from keyboard directly.
  
Actual results:
No response.

Expected results:
The "OK" button on the Authentication required windows should respond and connect to VNC server successfully.

Additional info: