no one knows why I can't mine?
[/quote]
since you have 7950's, I guess you could try the config I run. I'm not sure if any others are using the same or not, but I don't think so. I get 125KH/s with this setup.
For sapphire: 1060-1080 Clock and 1600Mhz RAM
For Powercolor: 1050 Clock and 1500 Mhz RAM
ultracoinminer (pool info) --scrypt-jane --sj-nfmin 4 --sj-nfmax 30 --sj-time 1388361600 --failover-only --thread-concurrency 43008 --intensity 18 --gpu-powertune 20 --worksize 256 --gpu-dyninterval 5 --no-submit-stale -g 1 --scan-time 1 --expiry 8 --queue 0