Doing a CD-ROM based install, if a failure in the install occurs (specifically the one in bug 12010), traceback pops up. Click OK and it kills X and unmounts filesystems, then goes to eject the CDROM . The eject fails (and says it fails), though it continues to go ahead and reboot.
hmmm ... the base exception of bug 12010 is resolved in winston beta 2... verifying this defect is resolved is not so easy ... I will close this issue for now, but if it reappears (albeit in another setting), please reopen it ...