During install, or when running Xconfigurator manually, you are never presented with the "Can you see this message?" message box. During the install, it fails back to textmode, but when run manually, after install, it doesn't fail back.
This defect is considered MUST-FIX for Florence Gold release
This is, AFAIK, fixed now for all cases when X starts successfully. Please reopen if it persists.
wolverine beta works fine. I'm closing this.