diff --git a/include/block.inc.php b/include/block.inc.php
index 47b8d51..fddea0b 100755
--- a/include/block.inc.php
+++ b/include/block.inc.php
@@ -199,13 +199,13 @@ public function forge($nonce, $argon, $public_key, $private_key){
 	
 	//check the argon hash and the nonce to produce a valid block
 
-	if(!$this->mine($public_key,$nonce, $argon)) return false;
+	if(!$this->mine($public_key,$nonce, $argon)) { _log("Forge failed - Invalid argon"); return false; }
 
 	// the block's date timestamp must be bigger than the last block
 	$current=$this->current();
 	$height=$current['height']+=1;
 	$date=time();
-	if($date<=$current['date']) return 0;
+	if($date<=$current['date']) { _log("Forge failed - Date older than last block"); return false; }
 	
 	// get the mempool transactions
 	$txn=new Transaction;
@@ -231,7 +231,7 @@ public function forge($nonce, $argon, $public_key, $private_key){
 		
 	// add the block to the blockchain
 	$res=$this->add($height, $public_key, $nonce, $data, $date, $signature, $difficulty, $reward_signature, $argon);	
-	if(!$res) return false;
+	if(!$res) { _log("Forge failed - Block->Add() failed"); return false; }
 	return true;
 }
 
diff --git a/peer.php b/peer.php
index 7c8ad41..f80abd8 100755
--- a/peer.php
+++ b/peer.php
@@ -188,7 +188,7 @@ elseif($q=="submitBlock"){
     _log('['.$_SERVER['REMOTE_ADDR']."] block ok, repropagating - $data[height]");
 
     // send it to all our peers
-//    system("php propagate.php block '$data[id]'  > /dev/null 2>&1  &");
+//    system("php propagate.php block '$data[id]' all all linear > /dev/null 2>&1  &");
     api_echo("block-ok");
 }
 // return the current block, used in syncing
diff --git a/propagate.php b/propagate.php
index 58cd508..e5f527f 100755
--- a/propagate.php
+++ b/propagate.php
@@ -30,9 +30,10 @@ $block= new Block();
 $type=san($argv[1]);
 $id=san($argv[2]);
 $debug=false;
+$linear=false;
 // if debug mode, all data is printed to console, no background processes
 if(trim($argv[5])=='debug') $debug=true;
-
+if(trim($argv[5])=='linear') $linear=true;
 $peer=san(trim($argv[3]));
 
 
@@ -58,6 +59,7 @@ if((empty($peer)||$peer=='all')&&$type=="block"){
 		$ip=filter_var($x['ip'], FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE);
 		// fork a new process to send the blocks async
 		if($debug) system("php propagate.php '$type' '$id' '$host' '$ip' debug");
+		elseif($linear)  system("php propagate.php '$type' '$id' '$host' '$ip' linear");
 		else system("php propagate.php '$type' '$id' '$host' 'ip'  > /dev/null 2>&1  &");
 	}
 	exit;
@@ -80,7 +82,7 @@ if($type=="block"){
 	$hostname=base58_decode($peer);
 	// send the block as POST to the peer
 	echo "Block sent to $hostname:\n";
-	$response= peer_post($hostname."/peer.php?q=submitBlock",$data,60,$debug);
+	$response= peer_post($hostname."/peer.php?q=submitBlock",$data,60, $debug);
 	if($response=="block-ok") { echo "Block $i accepted. Exiting.\n"; exit;}
 	elseif($response['request']=="microsync"){
 		// the peer requested us to send more blocks, as it's behind