As you may know, we haven't done a great job making GitHub work for non-English speakers. Large parts of the site are not internationalized, including our support and help documentation, and this problem is not improving.
Making GitHub awesome in non-English languages is a big project and one we're honestly not equipped to take on right now. So on Friday May 20, 2011 we will disable our international support and switch GitHub to English-only.
Thanks for understanding. We are majorly focused on making GitHub a fast, reliable, and fantastic tool in your development arsenal.
The GitHub Team