Not sure, but I\'m beginning to see a pattern; there is a known bug with Nvidia cards that can cause crashes in advanced 3d games/programs, I found that when I used to play Halo online a coupla years back. They had a bugfix then, but the newest updates make it redundant... and the option settings for the latest update may work for Halo etc, but it seems pretty useless for Planeshift.
I think I\'m going to get a new card for the machine I\'m building and try something other than Nvidia, maybe it\'ll help.