Rich: > What does 'brctl show' say? In the normal case, I believe that libvirt_qemud should create virbr0 and then add a rule to iptables that forwards through the bridge. In this case, brctl show does not list any bridges. > Try 'ssh -Y' instead of 'ssh -X' This did eliminate the warning on virt-manager startup but... > This is probably non-fatal. If I create virbr0 with brctl, then I can actually start a guest domain. If I click on anything in that window, virt-manager and all child windows crash with this error. Thanks for tolerating my long barrage of problems:) ciao, smoyer -- Steven W. Moyer Principle Architect, Assurance Applications C-COR Solutions, LLC 60 Decibel Road State College, PA 16801 Office Phone: 814-231-4408 Front Desk: 814-238-2461 Cell Phone: 814-883-0391 Fax: 814-278-6540 E-mail: smoyer@xxxxxxxxx AIM: StevenWMoyer ICQ: 349680381 Jabber: smoyer1@xxxxxxxxxxxxxxxxx MSN: smoyer64 Yahoo: smoyer64