Comment by tuomas.k...@gmail.com: Ok, moving ahead...Found the problem why firefox isn't starting, the installation package has old version of selenium server. I updated it, and was able to start firefox from the test.
Now I have next problem, the firefox isn't doing anything. Second thing is that IE tests stopped working...
For more information: http://code.google.com/p/robotframework-seleniumlibrary/wiki/Demo