Can anyone answer me this?
On BFG miner at the end of each accepted share it says "Diff 11/2" or "Diff 2/2" etc, the second number is always two but the first number changes every time. I guess it is something to do with the difficulty but not sure what?
The first number is the difficulty of the share that you found and are sending back. the second number is the difficulty that the miner is set to by the pool, the not less than difficulty. the first number will always be >= the second number. It is the same as CGminer.