Windows minimizing on their own? I bought an app called "Air Display" which allows me to use my iPad as a second monitor.  I've noticed that while I am on my second monitor whatever is on the other monitor will minimize after about 30 seconds.

Being new to Macs I'm not sure if this is some known behavior or a side effect of the Air Display app.  Is this because of how I have my mac setup?  If so, is there some setting I can change to stop this from happening?
Turns out there was an application called "Spirited Away" installed on my mac that was doing this.  Killed the application and the problem stopped happening.