I have Build 8.0.18305 and have two guest os's - Windows7 and CentOS 6.3. Scrolling using either the Apple Magic Mouse or the laptop's trackpad causes scolling to happen in blocks of 7-9 lines in text editors. Is there a way to change the scroll rate? Ideally it would be as smooth as it is on the Mac but if I could make it scroll 1 line at a time, that would be great. I did try setting "options" -> "advanced" -> "optimize modifier keys for games" to no avail.