added bad block check

lib/history.js

@@ -126,6 +126,20 @@ History.prototype.add = function(block, id)
 
 				this._save(item);
 
+				changed = true;
+			}
+			else if(this._items.length > 0 && block.arrived - this.bestBlock().arrived > 10*60*1000)
+			{
+				this._items.splice(0,1);
+
+				item.propagTimes.push({
+					node: id,
+					received: now,
+					propagation: block.propagation
+				});
+
+				this._save(item);
+
 				changed = true;
 			}
 		}