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					Originally Posted by  mgmueller
					 
				 
				On Windows -and before the update on MacBook Air- I can hover over a Windows, in this example the email client. I don't have to "activate" it, I still can remain in the other program. I just hover over the other Window and then can (could) scroll through the emails. And then I simply would click the email I want to have. 
Now I can't hover anymore. The other program is active and wherever I place my mousepointer doesn't matter. I have to click the mail client and then scroll through the list. 
No hovering at all anymore. 
			
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 Odd, this was always one of the features I admired in linux that frustrated me about Windows (at least, once I noticed it elsewhere 

).
IME, On WinXP and Win7, whichever window currently has focus gets scrolled, no matter which window is hovered over. (One click will focus+do_action, though.)
In fact, I just googled the issue, and got a page full of links to Windows apps that promise to "bring this mac feature to Windows".