I'm using virt-manager 0.8.6 client side on Ubuntu 11.04.  I can't get vnc over ssh to work to a kvm guest running on a Ubuntu 10.04 host.

kvmhost:~> virsh vncdisplay testing
:0

kvmhost:~> telnet 127.0.0.1 5900
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
RFB 003.008

Client virt-manager debug:
2011-06-24 11:28:56,055 (console:923): Starting connect process for proto=vnc trans=tcp connhost=192.168.1.10 connuser=pashdown connport=None gaddr=127.0.0.1 gport=5900 gsocket=None
2011-06-24 11:28:56,120 (console:810): Viewer disconnected

I can reach the console with:
xtightvncviewer -via 192.168.1.10 127.0.0.1:0

Any suggestions are appreciated.