The Mailbox Archiving Report in Enterprise Vault 10.0.3 is a work of beauty! Something else that I just noticed about it which is really good is the way it highlights mailboxes in an environment that haven't been provisioned.
Like this:
It is just another one of the great improvements of making things far more visible in an environment. Take a look the video that I did some time ago covering the Mailbox Archiving Report.