...Downloading one of the different compressed Ubuntu versions ( 9,04, 11.10 or 12.04 ) is optional. Updating is easy. https://wiki.ubuntu.com/PrecisePangolin/ReleaseSchedule
Speedlinux also installs Xming and PuTTY
Only SVN download contain: * Speed-to-fritz Script. * Script to start Freetz. * The Script to build installer.
Downloadlink for images: http://sourceforge.net/projects/speedlinux/
Attention! Usable only on Windows Systems with XP/Vista/7 32bit
More details are fond on the project homepage.