If you ever find your Mac suddenly going to sleep at odd times while you are using it like I have with my MacBook over the past few years, go check the Desktop & Screen Saver preference panel and click the Hot Corners button.  Make sure that one of your corners isn’t set to Put Display To Sleep like mine was.

Highly annoying – I can’t even begin to imagine why I had it set that way.

Mar 25, 2010