Something, (I'm guessing Chrome, based on the huge list of "bootstrap" error messages in Console) crashed my MBP when I put it to sleep. Restarted it, and the fans started running full blast... no apps open. Open, then close Chrome - no effect on CPU usage or fan speed. Put it to sleep again, fans turn off. Wake up, fans spin up, and CPU still showing ~50% usage from "System." Restart, same thing. Restart again, and now it seems fine. Any ideas what's happening?