reduce allowed future timestamp 2hrs -> 10 min

src/main.cpp

@@ -2949,7 +2949,7 @@ bool CheckBlockHeader(const CBlockHeader& block, CValidationState& state, bool f
                          REJECT_INVALID, "high-hash");
 
     // Check timestamp
-    if (block.GetBlockTime() > GetAdjustedTime() + 2 * 60 * 60)
+    if (block.GetBlockTime() > GetAdjustedTime() + 600)
         return state.Invalid(error("CheckBlockHeader(): block timestamp too far in the future"),
                              REJECT_INVALID, "time-too-new");
 

src/miner.cpp

@@ -485,7 +485,7 @@ void static BitcoinMiner(CWallet *pwallet)
                 } while (true);
                 fprintf(stderr,"Found peers\n");
             }
-            fprintf(stderr,"create new block\n");
+            //fprintf(stderr,"create new block\n");
             //
             // Create new block
             //