System stalls at Restart

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http://forums.opensuse.org – I have 11.3 Gnome installed on a Dell Optiplex380, and I can fully shutdown, but the system hangs when I try to Restart. The Geeko logo is there and the white bar retracts, once it hits all gray it stays there until I force a hard-shutdown holding the computer power-button. What steps can I take to fix this or start troubleshooting? Thank you! (Distributions)