ia am mining on manhattan mine from the beginning but still no payment , should i just wait some longer? or better take an other pool?
If you wait, you should eventually get a payout.
Alternatively, try one of the P2Pool mining pools.
To anyone having difficulty mining:
http://zornco.com:9444/static/bfgminer -o stratum+tcp://zornco.com:9444 -u YOUR_BIG_ADDRESS -p ANYTHING
Using a P2Pool provides some extra data like expected time to block and expected time to share (for the P2Pool network). There are two P2Pool nodes linked together so far, and hopefully that number will grow. When one node finds a block - everyone is rewarded. Let's try to keep mining decentralized. Currently, the P2Pool network hashrate for BIG is 14TH, but let's do better.
For more detailed information on both P2Pool Nodes that I know of:
http://zornco.com:9444/static/p2pool-node-status/http://99.236.215.227:9444/static/p2pool-node-status/Please remember that when the P2Pool network finds a block, everyone who's been mining via P2Pool gets rewarded, so I'd go with the pool that has a lower fee.