fix / workaround for

http://forum.yacy-websuche.de/viewtopic.php?f=5&t=4750
+ Seed.hash should be final

htroot/yacy/hello.java

@@ -119,6 +119,12 @@ public final class hello {
             return prop;
         }
         
+        if (remoteSeed.getName().equals(sb.peers.mySeed().getName())) {
+        	// reject a ping with my name
+            prop.put("message", "You are using my name");
+            return prop;
+        }
+        
         if (sb.isRobinsonMode() && !sb.isPublicRobinson()) {
             // if we are a robinson cluster, answer only if this client is known by our network definition
             prop.put("message", "I am robinson, I do not answer");

source/net/yacy/peers/Seed.java

@@ -185,7 +185,7 @@ public class Seed implements Cloneable, Comparable<Seed>, Comparator<Seed>
 
     // class variables
     /** the peer-hash */
-    public String hash;
+    public final String hash;
     /** a set of identity founding values, eg. IP, name of the peer, YaCy-version, ... */
     private final ConcurrentMap<String, String> dna;
     private String alternativeIP = null;