Isn't it strange difficulty is so high on launch with only cpu miners... and a "broken" cgminer in github??
what did you say?

Are you running that with the --keccak option? I can run it with --scrypt but not keccak.
I'm on linux btw and compiled cgminer with --enable-keccak and --enable-scrypt but it hangs when I run keccak.
Did you compile the source?
i downloaded newly released cudaminer that Christian compiled for windows

and did this:
linkAnyone mining on a 670 want to post their cudaminer settings?
this is my .bat
cudaminer.exe --algo=keccak -d 0 -l F1024x16 -L 128 -i 0 -o
http://127.0.0.1:5252 -O u:p
pause