I've (vmische) edited the logos a bit. First I've converted the original
logo to SVG so I can edit them with Inkscape. For further edting you should
always use Inkscape (as I've used Inkscape specific features like layers).

Here's the list of the new files with a description:
- logo.svg
Conversion of the original logo.eps

- logo_freefont.*
The original logo, but the font was replaced with the free (GPL2+Exception) font 
Gillius ADF (http://arkandis.tuxfamily.org/openfonts.html). The condensed
version was used for "FOSS4G" the normal one for the rest of the text.
The PNG version has much higher quality than the PNG version of the original
logo.

- logo_sponsor*
Logos for (Gold, Silver, Bronze) Sponsors. All of them are created from a single
SVG file which contains all the labels on different layers.

- logo_125x125*
A square logo (with a standard web banner size) that replaces the old
web-banner-square logo.

- logo_120x90*
This one replaces the small-logo.gif.

- logo_145x90*
The SVG files contains the source for the "I'm Speaking" and "I'm Going!" logos
(on different layers).

Deleted files:
- web-banner-square*
- small-logo.gif