I tried to use my Character Builder bookmark today and found it was missing. It has been moved from
http://www.wizards.com/dnd/launch.aspx?x=dnd/dnd/cblaunch
to
http://archive.wizards.com/dnd/launch.aspx?x=dnd/dnd/cblaunch
notice the "www" became "archive". Almost had a heart attack! The Adventure Tools got moved, too.
Archive does sound a bit ominous