preupgrade procedure incorrectly ask for password after reboot. it probably happens because i set simple password trough --vnc parameter. preupgrade-cli --vnc=1 --dhcpd ... after reboot i connect trougth vnc and got black screen, when i check monitor on my server i got VNC Set password dialog. As i think my password is weak and preupgrade-cli do not check that restriction. I suggest do not check password weak on boot. And one featore please support mdns broadcast for --dhcpd mode.
preupgrade-1.1.0pre3 checks for weak VNC passwords. You can get it here to confirm: http://koji.fedoraproject.org/koji/packageinfo?packageID=6045 *** This bug has been marked as a duplicate of bug 498843 ***