For some reason the forums are not setting the required cookie for me to be able to login automatically and only in firefox. konquerof and mozilla will auto login but not firefox. I even made an exception to always allow this site to set cookies. bummer but I can live with it.
Also Because of my fault 100% of the time in linux I have had to do a few reinstalls. When you first start the game always goto the setup menu and under the identity tab copy and paste the two lines that are there and save to a file that will not be writen over if you need to reinstall. then if you need to reinstall then copy the two lines back to the id tab and you will be back to your rank and all will be hunky dory. 😯 😀
In linux it is installed in /usr/share/scorched3d the executable is installed in /usr/bin. try this in a term scorched3d and see if that works. If it does then rightclick on the desktop and create a link to an application and point it to execute /usr/bin/scorched3d and pick an icon of your own choosing. 😀