Ok, here goes. I downloaded the 1.1 client/server release for Linux and installed it. I've got an NVidia card, GeForce 4 ti4200 and I had installed the latest NVidia drivers, from NVidia. These drivers are now patched and up to date, and it's possible to run a 32bit game binary, as well as a 64bit binary, without a problem. Doom3 looked good, but first in I didn't have any sound. So, I exited the game and went googling, and I discovered that my on-board sound (Realtek ALC655, using via82xx kernel module) had had this problem for some. It's related to that Quake3, and Doom3 requiring OSS emulation, and mmap ability to the soundcard. After still some more googling around, I discovered that all I had to do, to get my soundcard working with Doom3 was to add the following in my ~/.asoundrc pcm.via82xx { type hw card 0 mmap_emulation true } After which, I was able to start playing the game. It appears my system is a bit loaded, or bloated don't know which, so I had to exit KDE and use blackbox (or some other light window manager) to play the game effectively. This mileage my vary for others, depending on their CPU/GPU. My CPU is a 3000+, and my video card good ... but the newer ones are better. But in another window manager, the game looks and feels good. HTH, Örn