Icons from:

1) knenu:
Author: Pablo Fabregat
Website: http://www.lordcrow.homelinux.org | http://www.opentux.com.ar
Original Autor for the Gnome version: Silvestre Herrera
Website: http://www.slackwear.com.ar/

2) nuvola: 
by David Vignoni (icon-king.com)

3) Noia / Noia warm:
Carlitus: mail@carlitus.net

4) KDE: 
www.kde.org

5) CrystalProject:
by Everaldo Coelho
http://www.everaldo.com/crystal/

6) Oxygen:
http://www.oxygen-icons.org/
The Oxygen icon theme was started by David Vignoni during the first Appeal Project meeting held in Berlin on March 2005.

License: Oxygen icon theme is dual licensed. You may copy it under the Creative Common Attribution-ShareAlike 3.0 License or the GNU Library General Public License.

Authors:
David Vignoni a.k.a The Icon GodFather:  Icon theme art director and core icon designer 
Nuno Pinheiro a.k.a The Mad Scientist:  Style theme and cursor theme art director and core icon designer
Kenneth Wimer a.k.a The Loud American:  Project manager and core icon designer
Thomas Labking a.k.a Tha Professional Coder:  Core style developer and UI designer
Riccardo Iaconelli: Windec/style developer, cursor icon designer
Casper Boemann: Windec developer:
Johann Ollivier Lapeyre: Icon designer
Nuno Pavoa a.k.a DJ Geek: Sound theme composer

7) icon_Spar-*.png:
Juan M. Rius