diff --git a/lib/local_comms.js b/lib/local_comms.js
index 493bde7..9e52b4f 100644
--- a/lib/local_comms.js
+++ b/lib/local_comms.js
@@ -18,9 +18,9 @@ function Database(){
             path: global.config.db_storage_path,
             maxDbs: 10,
             mapSize: 24 * 1024 * 1024 * 1024,
-            noSync: true,
+            noSync: false,
             mapAsync: true,
-            useWritemap: true,
+            useWritemap: false,
             noMetaSync: true,
             maxReaders: 512
         });
@@ -477,12 +477,14 @@ function Database(){
 
     this.refreshEnv = function(){
         if (this.dirtyenv === true){
+            /*
             console.log("Database Worker: Reloading LMDB Env");
             global.database.env.sync(function(){
             });
             clearInterval(this.intervalID);
             global.database.env.close();
             this.initEnv();
+            */
         }
     };
 
diff --git a/lib/worker.js b/lib/worker.js
index f8c0486..6b0a171 100644
--- a/lib/worker.js
+++ b/lib/worker.js
@@ -449,6 +449,8 @@ function updateBlockHeader() {
                 value: body.result.block_header.reward,
                 ts: body.result.block_header.timestamp
             })]);
+        } else if (body.result.block_header.hash === lastBlockHash) {
+            console.debug("Block headers identical to historical header.  Ignoring");
         } else {
             console.error("GetLastBlockHeader Error during block header update");
         }
diff --git a/package.json b/package.json
index 0c3842f..db30ebe 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "moment": "2.17.1",
     "multi-hashing": "git+https://github.com/Snipa22/node-multi-hashing-aesni.git",
     "mysql": "2.12.0",
-    "node-lmdb": "^0.4.3",
+    "node-lmdb": "0.4.12",
     "promise-mysql": "3.0.0",
     "protocol-buffers": "^3.2.1",
     "range": "0.0.3",