diff --git a/libtorrent/src/manager.cc b/libtorrent/src/manager.cc
index c503974d..88aed983 100644
--- a/libtorrent/src/manager.cc
+++ b/libtorrent/src/manager.cc
@@ -87,6 +87,13 @@ Manager::Manager() :
               m_main_thread_main.signal_bitfield()->add_signal(std::bind(&HashQueue::work, m_hashQueue)),
               std::placeholders::_1);
 
+  m_hashQueueTwo = new HashQueue(&m_sub_thread_disk);
+  m_hashQueueTwo->slot_has_work() =
+    std::bind(&thread_base::send_event_signal,
+              &m_main_thread_main,
+              m_main_thread_main.signal_bitfield()->add_signal(std::bind(&HashQueue::work, m_hashQueueTwo)),
+              std::placeholders::_1);
+
   m_taskTick.slot() = std::bind(&Manager::receive_tick, this);
 
   priority_queue_insert(&taskScheduler, &m_taskTick, cachedTime.round_seconds());
diff --git a/libtorrent/src/manager.h b/libtorrent/src/manager.h
index 1db81e9b..6f045f06 100644
--- a/libtorrent/src/manager.h
+++ b/libtorrent/src/manager.h
@@ -72,7 +72,7 @@ class Manager {
   DownloadManager*    download_manager()                        { return m_downloadManager; }
   FileManager*        file_manager()                            { return m_fileManager; }
   HandshakeManager*   handshake_manager()                       { return m_handshakeManager; }
-  HashQueue*          hash_queue()                              { return m_hashQueue; }
+  HashQueue*          hash_queue()                              { return ++m_hashQueueCount % 2 == 0 ? m_hashQueue : m_hashQueueTwo; }
   ResourceManager*    resource_manager()                        { return m_resourceManager; }
 
   ChunkManager*       chunk_manager()                           { return m_chunkManager; }
@@ -84,6 +84,7 @@ class Manager {
 
   thread_main*        main_thread_main()                        { return &m_main_thread_main; }
   thread_disk*        main_thread_disk()                        { return &m_main_thread_disk; }
+  thread_disk*        sub_thread_disk()                         { return &m_sub_thread_disk; }
 
   EncodingList*       encoding_list()                           { return &m_encodingList; }
 
@@ -100,6 +101,7 @@ class Manager {
   FileManager*        m_fileManager;
   HandshakeManager*   m_handshakeManager;
   HashQueue*          m_hashQueue;
+  HashQueue*          m_hashQueueTwo;
   ResourceManager*    m_resourceManager;
 
   ChunkManager*       m_chunkManager;
@@ -109,12 +111,15 @@ class Manager {
 
   thread_main         m_main_thread_main;
   thread_disk         m_main_thread_disk;
+  thread_disk         m_sub_thread_disk;
 
   EncodingList        m_encodingList;
 
   Throttle*           m_uploadThrottle;
   Throttle*           m_downloadThrottle;
 
+  uint64_t            m_hashQueueCount;
+	
   unsigned int        m_ticks;
   rak::priority_item  m_taskTick;
 };
diff --git a/libtorrent/src/torrent/torrent.cc b/libtorrent/src/torrent/torrent.cc
index 339c2c4f..62eda0da 100644
--- a/libtorrent/src/torrent/torrent.cc
+++ b/libtorrent/src/torrent/torrent.cc
@@ -110,6 +110,8 @@ initialize() {
 
   manager->main_thread_disk()->init_thread();
   manager->main_thread_disk()->start_thread();
+  manager->sub_thread_disk()->init_thread();
+  manager->sub_thread_disk()->start_thread();
 }
 
 // Clean up and close stuff. Stopping all torrents and waiting for
@@ -120,6 +122,7 @@ cleanup() {
     throw internal_error("torrent::cleanup() called but the library is not initialized.");
 
   manager->main_thread_disk()->stop_thread_wait();
+  manager->sub_thread_disk()->stop_thread_wait();
 
   delete manager;
   manager = NULL;