Mac Mini white screen as user logs in (no desktop)
Sometimes when a user logs into my Mac Mini, they are greeted with a white screen. Instead of loading the desktop, it just stays frozen on the white screen. I am able to bring up Force Quit Applications, but nothing shows up on it. I am forced to hold the power button to turn off the computer. This is the only way to return back to normal. Anyone else experiencing or know the solution to this issue? I used to think it was my external My Book drive that was causing it to do this as it waited for it to wake up but I removed it from the equation and it still does this. It's done it twice this week so far.
I'm running the following:
Late 2012 Mac Mini with Fusion Drive
2.6GHz i7
4GB RAM
OS X 10.8.3
Dell U2412M Display
Wired Apple Keyboard, Wireless Magic Mouse
Mac mini, OS X Mountain Lion (10.8.3)