Why xcode 4.2 will not ask: "to save changes or not", for example when I delete \ altering anything in the StoryBoard and elsewhere? Wen I close xcode, it's just save any changes I did, but I do not want to do this. That's bad, I can do any modifications in my project and then just hit close button and it's will be saved without any warning messages, but if i do not want to save?
So, shortly after I posted my last message, I noticed it only partially worked (not when closing Xcode). Sorry about that.
The real solution for me was to change it globally (with 10.8) which is what I really wanted anyways:
1) Open the Settings app.
2) Open the General panel.
3) Check "Ask to keep changes when closing documents"
Hope this helps!