diff --git a/OpenSim/Framework/Util.cs b/OpenSim/Framework/Util.cs
index 039b926720..fce8999912 100644
--- a/OpenSim/Framework/Util.cs
+++ b/OpenSim/Framework/Util.cs
@@ -440,20 +440,30 @@ namespace OpenSim.Framework
         }
 
         /// <summary>
-        /// Return an SHA1 hash of the given string
+        /// Return an SHA1 hash
         /// </summary>
         /// <param name="data"></param>
         /// <returns></returns>
         public static string SHA1Hash(string data)
+        {
+            return SHA1Hash(Encoding.Default.GetBytes(data));
+        }
+
+        /// <summary>
+        /// Return an SHA1 hash
+        /// </summary>
+        /// <param name="data"></param>
+        /// <returns></returns>
+        public static string SHA1Hash(byte[] data)
         {
             byte[] hash = ComputeSHA1Hash(data);
             return BitConverter.ToString(hash).Replace("-", String.Empty);
         }
 
-        private static byte[] ComputeSHA1Hash(string src)
+        private static byte[] ComputeSHA1Hash(byte[] src)
         {
             SHA1CryptoServiceProvider SHA1 = new SHA1CryptoServiceProvider();
-            return SHA1.ComputeHash(Encoding.Default.GetBytes(src));
+            return SHA1.ComputeHash(src);
         }
 
         public static int fast_distance2d(int x, int y)
diff --git a/OpenSim/Services/AssetService/AssetService.cs b/OpenSim/Services/AssetService/AssetService.cs
index 851b7b4693..c7a259d2ca 100644
--- a/OpenSim/Services/AssetService/AssetService.cs
+++ b/OpenSim/Services/AssetService/AssetService.cs
@@ -84,11 +84,20 @@ namespace OpenSim.Services.AssetService
                     if (assetLoaderEnabled)
                     {
                         m_log.InfoFormat("[ASSET]: Loading default asset set from {0}", loaderArgs);
-                        m_AssetLoader.ForEachDefaultXmlAsset(loaderArgs,
-                                delegate(AssetBase a)
+
+                        m_AssetLoader.ForEachDefaultXmlAsset(
+                            loaderArgs,
+                            delegate(AssetBase a)
+                            {
+                                AssetBase existingAsset = Get(a.ID);
+//                                AssetMetadata existingMetadata = GetMetadata(a.ID);
+
+                                if (existingAsset == null || Util.SHA1Hash(existingAsset.Data) != Util.SHA1Hash(a.Data))
                                 {
+//                                    m_log.DebugFormat("[ASSET]: Storing {0} {1}", a.Name, a.ID);
                                     Store(a);
-                                });
+                                }
+                            });
                     }
 
                     m_log.Info("[ASSET SERVICE]: Local asset service enabled");