System freezes on shutdown, but reboot works fine.

[bullfrog]

Beta1, 64bit, most recent system update. My HP Pavilion G6 laptop freezes at shutdown time at the dialog after applications quit, no mouse, no keyboard, no shutdown. This behavior happens with both Power Off from the shutdown menu, and shutdown from the terminal. "shutdown -q" results in instant freeze, loss of keyboard and mouse. If I let the system run at this point, it overheats and goes into thermal shutdown, even with my extra cooling fans running. This is the only time I get overheating on this box, on any operating system. I tried a Beta1 32bit on the system, same issue.

Rebooting works excellent, no freezes, quick reboot.

[bullfrog]

Don't know why it opened two tickets, I only sent one