Safari spontaneously quits (auto-quits) when left idle (not in use) with no Safari-window open
Safari 6.0.5 on Mac with OS X 10.8.4 (Mountain Lion) on Mac mini (October 2012) 1TB Fusion Dive (700 GB free) 16GB RAM (8GB free) spontaneously quits (auto-quits) when left idle (not being used use) with no Safari-window is open.
Console says nothing. No error message. Safari shows open on the Dock, and after a while it os not there. It has quitted itself!
How to fix it?
Mac mini, OS X Mountain Lion (10.8.3), Booting from internal Fusion Drive