The CD source dialog uses the wrong order of buttons: Ok, Cancel It should be Cancel, Ok (as with other GTK/GNOME apps). Also, "OK" should better be "Close" as per GNOME HIG.
Created attachment 335154 [details] Screenshot
Confirmed in virt-manager-0.7.0-1.fc11.x86_64, should be an easy fix (This is the CD-ROM "connect" dialog)
Fixed upstream: http://hg.et.redhat.com/cgi-bin/hg-virt.cgi/applications/virt-manager--devel/rev/6f0170f9d551 Moving to POST.
This should be in 0.7.0-3.fc11, closing as RAWHIDE.