Because I’m working on a project with someone who was using blender 2.57 already, I wanted to update from 2.49 to 2.57. So I downloaded the tar.bz2-file and extracted it. Luckily, it works. However, the functions which have shortcuts (like ctrl-z/undo, ctrl-n/new file, ctrl-s/save) don’t work. And because these are the major functions, I really want them to work. I run Ubuntu 10.10.
I hope you can do something with it.