Those of us who play with Web analytics have gotten used to the way Google tweaks its Google Analytics product all the time. Sometimes you log in and a button is shifted or moved or colored differently. Always be testing, right?
Google is in the midst of an upgrade to Google Analytics that is more than a few minor UI tweaks. Google Analytics Version 5 is a pretty hefty revision. While the smooth gradient interface design is an incremental upgrade, there are enough improvements in organization and reporting features that make this update more than skin deep.
One of the hard parts about getting started with Web analytics has been that all of the reports have had names that are confusing or organized in a way that only a Web analyst would love.