Same problem here, only the fix listed on your link did not do anything for me. Kinda of a Linux newbie, but I did get everything to work (persistence included) except I cannot get the GPU to mine. I can mine w/ CPU OK on BTCGuild, my 6950 get recognized by aticonfig, when I start the phoenix miner, it connects and it just sits at 0 MHash/sec - poclbm just gives me a empty terminal window. Tried Hashkill, I can log into the pool, I'm getting new blocks, but the speed is listed as 0 MHash/sec. It looks like there's a missing piece - card is a brand new Sapphire 6950. Ideas?