Yes you're right there was something wrong with the Ethernet cable once I changed it the scoring hash rate came back to 1100 gh/s
Thanks for your help.
One question more:
Is it better to continue with slush pool or go to kano.is
And what is the difference between them
I am partial to Kano.is mainly because he was a major developer of the mining code cgminer.
I wrote a long write up on why I think his pool it the best choice.
Since I started the write up he went from good to better.
But like any pool your connection to the pool is important.
If your connection to both pools is equal I believe Kano.is is the best choice for you.
this is my writeup as to why you and for that matter anyone with a good connection should use kano.is
https://bitcointalk.org/index.php?topic=1338693.0It is a lot better pool than bitcoincz I would say without a doubt. I had a stupid question about his pool, and he took time to help me. Not to many pool owners take time to personally anwser a question. And if you use it sign up for a account, it's more accurate on hashing rate then just using BTC addres that was part of my stupid question .... the anwser was sign up for a account and you get great stat's.
But try it or another pool. As it appears pool is issue most likely as that PSU can easily run an S5. Only thing else I would ask is do you have more then just the S5 plugged into that PSU?