We've just released some more address book updates:
* Some small user interface and consistency cleanups
* Moved the [Edit] link and [+] link to the left side of the screen, which should be easier to see which goes with which address
* New "dynamic loading" of address details with the [+] link. This allows the loading of the address details without a full round-trip to the server, only the details for that particular user are dynamically loaded. This is currently only available for IE6, Firefox/Moz, and Opera 8 beta