I would like some feedback and suggestions on overall look and feel of this dashboard mock-up for a file-sharing site. I do personally think that there is an over use of gray.

The project is for a web based file-sharing service, its paid therefor its not for piracy and such but for quick and easy sharing photos with friends, family's and others as well as files.
The goal is to achieve as light and as easy to use dashboard without a need for any learning curve. Also here is a revised and more detailed wire-frame that I just got from one of designers on the team.
