For the last month or so I haven't been able to use gnome on a machine with a SAS controller using the mptsas driver as something run when I logged in triggered a problem where my internal disk devices all got removed. I can use gnome today. The fix either came in yesterday's or today's updates. There wasn't a kernel update, but gnome had some changes.
I didn't see anyone else complaining about this particular issue, but figured I'd mention the change in status since I complained about it here.