So..I got my first ever kernel panic on my 2.16. Pretty cool to see the grey screen + "You must restart" text. I was waking from sleep, and the only apps open were Mail, Omnioutliner Pro, iPulse and maybe Firefox. Plus the VPN connection for school was still running. Magsafe was not connected, nor were any external devices. What could have caused it, and should I be concerned (at all)?