diff --git a/libtorrent/include/libtorrent/session_settings.hpp b/libtorrent/include/libtorrent/session_settings.hpp
index a8b2091f6..d7a4f88c1 100644
--- a/libtorrent/include/libtorrent/session_settings.hpp
+++ b/libtorrent/include/libtorrent/session_settings.hpp
@@ -106,6 +106,7 @@ namespace libtorrent
 			, lazy_bitfields(true)
 			, inactivity_timeout(600)
 			, unchoke_interval(20)
+			, num_want(200)
 #ifndef TORRENT_DISABLE_DHT
 			, use_dht_as_fallback(true)
 #endif
@@ -242,6 +243,9 @@ namespace libtorrent
 		// tracker in the ip= parameter.
 		address announce_ip;
 
+		// the num want sent to trackers
+		int num_want;
+
 #ifndef TORRENT_DISABLE_DHT
 		// while this is true, the dht will note be used unless the
 		// tracker is online
diff --git a/libtorrent/include/libtorrent/storage.hpp b/libtorrent/include/libtorrent/storage.hpp
index 552b6e89f..8a10c7148 100755
--- a/libtorrent/include/libtorrent/storage.hpp
+++ b/libtorrent/include/libtorrent/storage.hpp
@@ -211,7 +211,9 @@ namespace libtorrent
 		fs::path save_path() const;
 
 		void async_release_files(
-			boost::function<void(int, disk_io_job const&)> const& handler);
+			boost::function<void(int, disk_io_job const&)> const& handler
+			= boost::function<void(int, disk_io_job const&)>());
+
 		void async_move_storage(fs::path const& p
 			, boost::function<void(int, disk_io_job const&)> const& handler);
 
diff --git a/libtorrent/src/bt_peer_connection.cpp b/libtorrent/src/bt_peer_connection.cpp
index 7264899a5..2483b4a2a 100755
--- a/libtorrent/src/bt_peer_connection.cpp
+++ b/libtorrent/src/bt_peer_connection.cpp
@@ -2286,4 +2286,3 @@ namespace libtorrent
 
 }
 
-
diff --git a/libtorrent/src/identify_client.cpp b/libtorrent/src/identify_client.cpp
index 44be2d60f..26ddb51dc 100755
--- a/libtorrent/src/identify_client.cpp
+++ b/libtorrent/src/identify_client.cpp
@@ -193,7 +193,7 @@ namespace
 		, {"TT", "TuoTu"}
 		, {"U",  "UPnP"}
 		, {"UL", "uLeecher"}
-		, {"UT", "MicroTorrent"}
+		, {"UT", "uTorrent"}
 		, {"XT", "XanTorrent"}
 		, {"XX", "Xtorrent"}
 		, {"ZT", "ZipTorrent"}
diff --git a/libtorrent/src/torrent.cpp b/libtorrent/src/torrent.cpp
index 629045cce..fe1bf8091 100755
--- a/libtorrent/src/torrent.cpp
+++ b/libtorrent/src/torrent.cpp
@@ -1007,8 +1007,7 @@ namespace libtorrent
 		// disconnect all peers and close all
 		// files belonging to the torrents
 		disconnect_all();
-		if (m_owning_storage.get()) m_storage->async_release_files(
-			bind(&torrent::on_files_released, shared_from_this(), _1, _2));
+		if (m_owning_storage.get()) m_storage->async_release_files();
 		m_owning_storage = 0;
 	}
 
@@ -1352,7 +1351,7 @@ namespace libtorrent
 		if (m_event != tracker_request::stopped)
 			m_event = tracker_request::none;
 		req.url = m_trackers[m_currently_trying_tracker].url;
-		req.num_want = 50;
+		req.num_want = m_settings.num_want;
 		// if we are aborting. we don't want any new peers
 		if (req.event == tracker_request::stopped)
 			req.num_want = 0;
@@ -2041,8 +2040,7 @@ namespace libtorrent
 			, bind(&peer_connection::disconnect, _1));
 
 		assert(m_storage);
-		m_storage->async_release_files(
-			bind(&torrent::on_files_released, shared_from_this(), _1, _2));
+		m_storage->async_release_files();
 	}
 	
 	// called when torrent is complete (all pieces downloaded)