Just a reminder to everyone: I'm using Mountain Lion and I haven't used any previous osx before.

So there is this really annoying bug. As we all know it, Apple loves using real-life paradigms in their software. And one of these is spatial finder. Fortunately for people like me, who loves productivity and cleanliness, instead of gazillion open windows, there is also setting to use navigational style. And it even is the default one. But there are times when this spatial metaphor is forced upon user (like when browsing my external HDD). This magical setting is called "Always open folders in a new window". As you can see, this isn't strictly spatial/navigational setting, as Apple can only promise us it will open windows in new windows every time, but not the other way around. But to me, it really feels like a very annoying bug.

Second inconsistency in Finder is closing windows. You can close (well, you can't, close behaves a lot like minimize, and minimize behaves like a... also minimize) a window and you can quit an app. So far so good. Each action has shortcut associated with it: ⌘+w for closing and ⌘+q for quitting. This works everywhere except Finder. You can only close Finder window and must do it with ⌘+q. You can't quit Finder†. When you have several windows/apps open and are closing all of them one by one, if there is Finder window open somewhere you will be stopped by "you-are-not-allowed-to-do-that" sound. You have to close it with different shortcut, and after that keep closing other windows until you reach another Finder window. If only they would have used same shortcut everywhere, power users could train their muscle memory so much easier. Better still - they could map both these shortcuts to closing window in Finder so we could quit all apps without being unnecessarily stopped. Just like all other OSes do.

† You actually can through hoops and loops, but shouldn't do this as it will break other things