On all the 3 f17 machines I am using I see this behaviour, so I assume it is quite easy to reproduce: Usually after booting the machine the gdm login prompt is shown in grey with sharp corners. Sometimes it is empty. But apparently consistently: If I press ctrl-alt-backspace to restart X and gdm, then I get the fancy black login prompt with rounded corners, always populated with users. I would expect the black style to be used every time. All the systems do support KMS and gnome-shell. gdm-3.4.0.1-5.fc17.i686 or 3.4.1.1.fc17
I've never seen the described behaviour. Anything particular about your machines ? E.g. lots of users in the user list ? Slow network involved ?
No, nothing special. Only a few users, no special network based auth or anything else that requires network access. All the machines have been yum upgraded through a number of releases.
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