I am pleased to say that with Maps V5.9.0, I've got my contacts list back. As of writing this post, the Clock app is still working. However, there was, as posted earlier, a period where the Clock app was back to taking up 0.00KB and otherwise being non-existent. Why it came back into being escapes me. But I'm glad it's back.
The Labs section has added a tool that is very welcome: Bubble Buttons. It adds two buttons to the "bubble" marking a location found in a search. Search for "Voodoo Donuts" (there are three locations, in Portland and Eugene, OR) and on either side of the "Voodoo Doughnut" banner are a phone button on the left and a Navigation on the right. V. cool, v. useful!
BTW, the desktop version of Maps now has weather info included in the options. One wonders when the Android Maps will have it.