I think PoW will be ending at block 10,000 - so in about 5 hours or less.  I don't think we have until March 3rd 4:40 UTC to mine PoW.  The reason being, I edited the rocminer.cpp file in the wallet and added some printf's to tell me what the value of pindexBest->nHeight is.  Here is the result:

Code:

fprintf(stderr, "BLOCKS: %d\n", pindexBest->nHeight);

Output:

BLOCKS: 9314

Which means the pindexBest->nHeight variable value is 9314, which was the current block at the time I wrote this.

This code, will prevent any new PoW blocks:

    if (pindexBest->nHeight >= LAST_POW_BLOCK)
        throw JSONRPCError(RPC_MISC_ERROR, "No more PoW blocks");

LAST_POW_BLOCK value is 10000, as seen here:

./blackcoin/src/main.h:static const int LAST_POW_BLOCK = 10000;

So, looks like we stop mining PoW in about 5 hours and our coins will be more scarce, unless there is a patch by the dev.

I say 5 hours based on roughly how long it took to get through the last 1000 blocks.

Please correct me if I'm wrong or missing something.

Rob.