In Beta 1, User Account Protection (UAP) was disabled by default, but you could enable it with a Start menu icon. In build 5219, that situation is reversed: UAP is on by default, and you can still disable it, though I'd imagine the graphical option to do so will be removed later in the beta cycle. Here's what's odd. Unlike in Beta 1, UAP doesn't really pop up all that often for some reason. In fact, it kind of makes me wonder whether it's really working at all. I've been able to perform a number of admin-level tasks without needing to logon in build 5219.
The Parental Controls functionality is basically carried over from Beta 1, but with a nicer-looking interface (
Figure).