Can shut down problem be fixed?
Since upgrading to my snazzy new iMac, I find that when I go to restart, after everything closes and the screen turns grey, I get the spinning gear, but it just keeps spinning forever. I have to hold the power button on the back to force quit. Sometimes, if nothing has been running, it will restart just fine, but usually not. What could be causing the computer to hang on the grey screen and can it be fixed?
iMac, OS X Mavericks (10.9.1), 3.4 GHz, Fusion drive