auto closing preview when it has no open windows

this is just the way OS X works. its a document and windowed based operating system. as a rule of thumb every app which can open multiple windows will not quit when you close the last window and every app that only has one window i.e. System Preferences, Disk Utility, iPhoto etc will quit when you close its window.

if you have no files or windows open you can just let the app sit open in RAM and when you want to open a file or window later on is super quick. take Photoshop for example, it takes a while to open so if you want to access a photo later on youd just leave Photoshop open.

if you want the app to quit when closing the last window/file just press "command-Q" instead of clicking the red "X".

This irritated me at first too, iansilv, until I realized that I can easily keep 15 applications open without noticing even the slightest affect on system performance. I say let them all stay open, if your computer can handle it!

i have 2 gb of ram and always have 25 + apps open at once.

I've had over 90 apps open with no slowdown on speed or performance.

I wouldn'y worry about it.


--Eric