I'm having some serious trouble installing a GPU bitcoin miner on Ubuntu 12.10 64-bit . I've downloaded cgminer 2.9.6 x86_64 and I'm pretty sure that I have the necessary AMD drivers/utilities. When I open terminal and navigate to the unpacked cgminer folder and run the utility it asks for a url, which I put as http://www.50btc.com:8333 . It then asks for a username, and I give it my username. It then asks for a password, and since my password is nothing, I just press the enter key. A white box flashes for about 50 seconds and it then tells me it couldn't connect to a host. When I boot into windows 7 and try it on my windows miner it works just fine, which leads me to believe I didn't install it/haven't installed it correctly. Perhaps the no password thing is messing it up? I'm really not sure.
Any help would be greatly appreciated.