Blank Document, Full Document, Search, Save, Flags and Setting Icons
Everaldo Coelho - http://www.everaldo.com/ LGPL 

Print and Star Icons
David Vignoni - http://www.icon-king.com/ LGPL

Folder and Pencil Icons
Alexandre Moore - http://sa-ki.deviantart.com/ LGPL

Mail Icon
New Mooon - http://code.google.com/u/newmooon/ 

User Male and User Female icons
Icojam http://www.icojam.com/blog/?p=253 Public Domain