The PM alert (or "car horn" as Mark puts it!
) is back! But, if you don't care for it, you can easily go to "My Home" and turn off JUST the horn, or the horn and pop-up box BOTH. That's the neat part, as you can taylor it to however you want it. But, by default, BOTH the pop-up box and car horn was set to "on" for all users when it was re-installed.