diff --git a/Changelog b/Changelog
index 7b24bfbc8..94f171827 100644
--- a/Changelog
+++ b/Changelog
@@ -24,6 +24,7 @@
     - BUGFIX: Made ETA more reliable using stats instead of instant values
     - BUGFIX: Remove torrent from hard drive used to delete parent folder if empty
     - BUGFIX: Fixed a crash when filtering all the files in a torrent
+    - BUGFIX: Reload torrent only when necessary (properties)
     - COSMETIC: Redesigned torrent properties a little
     - COSMETIC: Redesigned options a little
     - COSMETIC: Display more logs messages concerning features
diff --git a/TODO b/TODO
index a8cd37d2b..9a48b3c9c 100644
--- a/TODO
+++ b/TODO
@@ -46,5 +46,4 @@
 - Allow to scan multiple directories
 - Fix all (or almost all) opened bugs in bug tracker
 - Fix sorting with Qt 4.3 - Reported to Trolltech, waiting for fix
-- update sorting when a new torrent is added
-- properties: reload torrent only if priorities changed
\ No newline at end of file
+- update sorting when a new torrent is added
\ No newline at end of file
diff --git a/src/FinishedTorrents.cpp b/src/FinishedTorrents.cpp
index f415df1da..d29c10d66 100644
--- a/src/FinishedTorrents.cpp
+++ b/src/FinishedTorrents.cpp
@@ -307,7 +307,7 @@ void FinishedTorrents::showProperties(const QModelIndex &index){
   QString fileHash = finishedListModel->data(finishedListModel->index(row, HASH)).toString();
   torrent_handle h = BTSession->getTorrentHandle(fileHash);
   QStringList errors = ((GUI*)parent)->trackerErrors.value(fileHash, QStringList(tr("None", "i.e: No error message")));
-  properties *prop = new properties(this, h, errors);
+  properties *prop = new properties(this, BTSession, h, errors);
   connect(prop, SIGNAL(changedFilteredFiles(torrent_handle, bool)), BTSession, SLOT(reloadTorrent(torrent_handle, bool)));
   prop->show();
 }
diff --git a/src/GUI.cpp b/src/GUI.cpp
index 22525430a..bcd5cdd72 100644
--- a/src/GUI.cpp
+++ b/src/GUI.cpp
@@ -154,7 +154,6 @@ GUI::GUI(QWidget *parent, QStringList torrentCmdLine) : QMainWindow(parent){
   // Configure BT session according to options
   configureSession(true);
   force_exit = false;
-  connect(&BTSession, SIGNAL(updateFileSize(QString)), this, SLOT(updateFileSize(QString)));
   // Resume unfinished torrents
   BTSession.resumeUnfinishedTorrents();
 	// Load last columns width for download list
@@ -1163,12 +1162,13 @@ void GUI::showProperties(const QModelIndex &index){
   QString fileHash = DLListModel->data(DLListModel->index(row, HASH)).toString();
   torrent_handle h = BTSession.getTorrentHandle(fileHash);
   QStringList errors = trackerErrors.value(fileHash, QStringList(tr("None", "i.e: No error message")));
-  properties *prop = new properties(this, h, errors);
-  connect(prop, SIGNAL(changedFilteredFiles(torrent_handle, bool)), &BTSession, SLOT(reloadTorrent(torrent_handle, bool)));
+  properties *prop = new properties(this, &BTSession, h, errors);
+  connect(prop, SIGNAL(mustHaveFullAllocationMode(torrent_handle)), &BTSession, SLOT(reloadTorrent(torrent_handle)));
+  connect(prop, SIGNAL(filteredFilesChanged(const QString&)), this, SLOT(updateFileSize(const QString&)));
   prop->show();
 }
 
-void GUI::updateFileSize(QString hash){
+void GUI::updateFileSize(const QString& hash){
   int row = getRowFromHash(hash);
   DLListModel->setData(DLListModel->index(row, SIZE), QVariant((qlonglong)BTSession.torrentEffectiveSize(hash)));
 }
diff --git a/src/GUI.h b/src/GUI.h
index 9a58114cd..3109c2498 100644
--- a/src/GUI.h
+++ b/src/GUI.h
@@ -171,7 +171,7 @@ class GUI : public QMainWindow, private Ui::MainWindow{
     void trackerError(const QString& hash, const QString& time, const QString& msg);
     void trackerAuthenticationRequired(torrent_handle& h);
     void setTabText(int index, QString text);
-    void updateFileSize(QString hash);
+    void updateFileSize(const QString& hash);
     void sortProgressColumnDelayed();
 
   protected:
diff --git a/src/PropListDelegate.h b/src/PropListDelegate.h
index 97a57cfda..2d87e958c 100644
--- a/src/PropListDelegate.h
+++ b/src/PropListDelegate.h
@@ -46,8 +46,13 @@
 class PropListDelegate: public QItemDelegate {
   Q_OBJECT
 
+  private:
+    bool* filteredFilesChanged;
+
   public:
-    PropListDelegate(QObject *parent=0) : QItemDelegate(parent){}
+    PropListDelegate(QObject *parent=0, bool* filteredFilesChanged=0) : QItemDelegate(parent){
+      this->filteredFilesChanged = filteredFilesChanged;
+    }
 
     ~PropListDelegate(){}
 
@@ -206,21 +211,42 @@ class PropListDelegate: public QItemDelegate {
       } else {
         color = "red";
       }
+      unsigned short old_val = index.model()->data(index, Qt::DisplayRole).toInt();
       switch(value){
         case 0:
-          model->setData(index, QVariant(IGNORED));
+          if(old_val != IGNORED){
+            model->setData(index, QVariant(IGNORED));
+            if(filteredFilesChanged != 0)
+              *filteredFilesChanged = true;
+          }
           break;
         case 1:
-          model->setData(index, QVariant(NORMAL));
+          if(old_val != NORMAL){
+            model->setData(index, QVariant(NORMAL));
+            if(filteredFilesChanged != 0)
+              *filteredFilesChanged = true;
+          }
           break;
         case 2:
-          model->setData(index, QVariant(HIGH));
+          if(old_val != HIGH){
+            model->setData(index, QVariant(HIGH));
+            if(filteredFilesChanged != 0)
+              *filteredFilesChanged = true;
+          }
           break;
         case 3:
-          model->setData(index, QVariant(MAXIMUM));
+          if(old_val != MAXIMUM){
+            model->setData(index, QVariant(MAXIMUM));
+            if(filteredFilesChanged != 0)
+              *filteredFilesChanged = true;
+          }
           break;
         default:
-          model->setData(index, QVariant(NORMAL));
+          if(old_val != NORMAL){
+            model->setData(index, QVariant(NORMAL));
+            if(filteredFilesChanged != 0)
+              *filteredFilesChanged = true;
+          }
       }
       for(int i=0; i<model->columnCount(); ++i){
         model->setData(model->index(index.row(), i), QVariant(QColor(color)), Qt::TextColorRole);
diff --git a/src/bittorrent.cpp b/src/bittorrent.cpp
index 127706b7a..14445bf0a 100644
--- a/src/bittorrent.cpp
+++ b/src/bittorrent.cpp
@@ -132,9 +132,12 @@ void bittorrent::deleteTorrent(const QString& hash, bool permanent){
   torrentBackup.remove(hash+".priorities");
   torrentBackup.remove(hash+".savepath");
   torrentBackup.remove(hash+".trackers");
-  // Remove it fro ETAs hash tables
+  // Remove it from ETAs hash tables
   ETAstats.take(hash);
   ETAs.take(hash);
+  int index = fullAllocationModeList.indexOf(hash);
+  if(index != -1)
+    fullAllocationModeList.removeAt(index);
   if(permanent){
     // Remove from Hard drive
     qDebug("Removing this on hard drive: %s", qPrintable(savePath+QDir::separator()+fileName));
@@ -266,7 +269,7 @@ void bittorrent::addTorrent(const QString& path, bool fromScanDir, bool onStartu
     h.set_max_uploads(-1);
     qDebug("Torrent hash is " +  hash.toUtf8());
     // Load filtered files
-    loadFilteredFiles(h);
+    loadFilesPriorities(h);
     // Load trackers
     bool loaded_trackers = loadTrackerFile(hash);
     // Doing this to order trackers well
@@ -440,7 +443,7 @@ void bittorrent::disableDHT(){
 
 // Read pieces priorities from .priorities file
 // and ask torrent_handle to consider them
-void bittorrent::loadFilteredFiles(torrent_handle &h){
+void bittorrent::loadFilesPriorities(torrent_handle &h){
   torrent_info torrentInfo = h.get_torrent_info();
   unsigned int nbFiles = torrentInfo.num_files();
   if(!h.is_valid()){
@@ -757,7 +760,8 @@ void bittorrent::readAlerts(){
   }
 }
 
-void bittorrent::reloadTorrent(const torrent_handle &h, bool compact_mode){
+// Reload a torrent with full allocation mode
+void bittorrent::reloadTorrent(const torrent_handle &h){
   qDebug("** Reloading a torrent");
   if(!h.is_valid()){
     qDebug("/!\\ Error: Invalid handle");
@@ -767,6 +771,10 @@ void bittorrent::reloadTorrent(const torrent_handle &h, bool compact_mode){
   fs::path saveDir = h.save_path();
   QString fileName = QString(h.name().c_str());
   QString fileHash = QString(misc::toString(h.info_hash()).c_str());
+  int index = fullAllocationModeList.indexOf(fileHash);
+  if(index == -1){
+    fullAllocationModeList << fileHash;
+  }
   qDebug("Reloading torrent: %s", (const char*)fileName.toUtf8());
   torrent_handle new_h;
   entry resumeData;
@@ -796,17 +804,13 @@ void bittorrent::reloadTorrent(const torrent_handle &h, bool compact_mode){
     std::cerr << "Error: Couldn't reload the torrent\n";
     return;
   }
-  new_h = s->add_torrent(t, saveDir, resumeData, compact_mode);
-  if(compact_mode){
-    qDebug("Using compact allocation mode");
-  }else{
-    qDebug("Using full allocation mode");
-  }
+  new_h = s->add_torrent(t, saveDir, resumeData, false);
+  qDebug("Using full allocation mode");
 
 //   new_h.set_max_connections(60);
   new_h.set_max_uploads(-1);
   // Load filtered Files
-  loadFilteredFiles(new_h);
+  loadFilesPriorities(new_h);
 
   // Pause torrent if it was paused last time
   if(QFile::exists(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+fileHash+".paused")){
@@ -817,7 +821,6 @@ void bittorrent::reloadTorrent(const torrent_handle &h, bool compact_mode){
     qDebug("Incremental download enabled for %s", (const char*)fileName.toUtf8());
     new_h.set_sequenced_download_threshold(15);
   }
-  emit updateFileSize(fileHash);
 }
 
 int bittorrent::getListenPort() const{
@@ -828,6 +831,12 @@ session_status bittorrent::getSessionStatus() const{
   return s->status();
 }
 
+bool bittorrent::inFullAllocationMode(const QString& hash) const{
+  if(fullAllocationModeList.indexOf(hash) != -1)
+    return true;
+  return false;
+}
+
 QString bittorrent::getSavePath(const QString& hash){
   QFile savepath_file(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".savepath");
   QByteArray line;
diff --git a/src/bittorrent.h b/src/bittorrent.h
index 3160aaef4..260081e8e 100644
--- a/src/bittorrent.h
+++ b/src/bittorrent.h
@@ -62,6 +62,7 @@ class bittorrent : public QObject{
     QHash<QString, QList<long> > ETAstats;
     QHash<QString, long> ETAs;
     QTimer ETARefresher;
+    QList<QString> fullAllocationModeList;
 
   protected:
     QString getSavePath(const QString& hash);
@@ -85,6 +86,7 @@ class bittorrent : public QObject{
     QStringList getUncheckedTorrentsList() const;
     long getETA(QString hash) const;
     size_type torrentEffectiveSize(QString hash) const;
+    bool inFullAllocationMode(const QString& hash) const;
 
   public slots:
     void addTorrent(const QString& path, bool fromScanDir = false, bool onStartup = false, const QString& from_url = QString());
@@ -104,7 +106,7 @@ class bittorrent : public QObject{
     void enablePeerExchange();
     void enableIPFilter(ip_filter filter);
     void disableIPFilter();
-    void reloadTorrent(const torrent_handle &h, bool compact_mode = true);
+    void reloadTorrent(const torrent_handle &h);
     void setTorrentFinishedChecking(QString hash);
     void resumeUnfinishedTorrents();
     void updateETAs();
@@ -119,10 +121,10 @@ class bittorrent : public QObject{
     void setSessionSettings(session_settings sessionSettings);
     void setDefaultSavePath(const QString& savepath);
     void applyEncryptionSettings(pe_settings se);
+    void loadFilesPriorities(torrent_handle& h);
 
   protected slots:
     void cleanDeleter(deleteThread* deleter);
-    void loadFilteredFiles(torrent_handle& h);
     void scanDirectory();
     void readAlerts();
     void processDownloadedFile(const QString&, const QString&, int, const QString&);
diff --git a/src/properties_imp.cpp b/src/properties_imp.cpp
index e4689d4cc..a4a909f6e 100644
--- a/src/properties_imp.cpp
+++ b/src/properties_imp.cpp
@@ -26,8 +26,10 @@
 #include <QMessageBox>
 
 // Constructor
-properties::properties(QWidget *parent, torrent_handle &h, QStringList trackerErrors): QDialog(parent), h(h){
+properties::properties(QWidget *parent, bittorrent *BTSession, torrent_handle &h, QStringList trackerErrors): QDialog(parent), h(h){
   setupUi(this);
+  this->BTSession = BTSession;
+  changedFilteredfiles = false;
   lbl_priorities->setText(tr("Priorities:")+"<ul><li>"+tr("Ignored: file is not downloaded at all")+"</li><li>"+tr("Normal: normal priority. Download order is dependent on availability")+"</li><li>"+tr("High: higher than normal priority. Pieces are preferred over pieces with the same availability, but not over pieces with lower availability")+"</li><li>"+tr("Maximum: maximum priority, availability is disregarded, the piece is preferred over any other piece with lower priority")+"</li></ul>");
   // set icons
   addTracker_button->setIcon(QIcon(QString::fromUtf8(":/Icons/skin/add.png")));
@@ -42,7 +44,7 @@ properties::properties(QWidget *parent, torrent_handle &h, QStringList trackerEr
   PropListModel->setHeaderData(PROGRESS, Qt::Horizontal, tr("Progress"));
   PropListModel->setHeaderData(PRIORITY, Qt::Horizontal, tr("Priority"));
   filesList->setModel(PropListModel);
-  PropDelegate = new PropListDelegate();
+  PropDelegate = new PropListDelegate(0, &changedFilteredfiles);
   filesList->setItemDelegate(PropDelegate);
   connect(filesList, SIGNAL(clicked(const QModelIndex&)), filesList, SLOT(edit(const QModelIndex&)));
   connect(addTracker_button, SIGNAL(clicked()), this, SLOT(askForTracker()));
@@ -329,6 +331,7 @@ void properties::on_okButton_clicked(){
 }
 
 void properties::savePiecesPriorities(){
+  if(!changedFilteredfiles) return;
   qDebug("Saving pieces priorities");
   torrent_info torrentInfo = h.get_torrent_info();
   bool hasFilteredFiles = false;
@@ -351,6 +354,10 @@ void properties::savePiecesPriorities(){
     pieces_file.write(QByteArray((misc::toString(priority)+"\n").c_str()));
   }
   pieces_file.close();
-  emit changedFilteredFiles(h, !hasFilteredFiles);
+  if(hasFilteredFiles && !BTSession->inFullAllocationMode(fileHash)){
+    emit mustHaveFullAllocationMode(h);
+  }
+  BTSession->loadFilesPriorities(h);
+  emit filteredFilesChanged(fileHash);
   has_filtered_files = hasFilteredFiles;
 }
diff --git a/src/properties_imp.h b/src/properties_imp.h
index b4f1811d5..debfcaa5d 100644
--- a/src/properties_imp.h
+++ b/src/properties_imp.h
@@ -23,6 +23,7 @@
 #define PROPERTIES_H
 
 #include "ui_properties.h"
+#include "bittorrent.h"
 #include <libtorrent/session.hpp>
 #include <QStandardItemModel>
 #include <QTimer>
@@ -40,6 +41,8 @@ class properties : public QDialog, private Ui::properties{
     QStandardItemModel *PropListModel;
     QTimer *updateProgressTimer;
     bool has_filtered_files;
+    bool changedFilteredfiles;
+    bittorrent *BTSession;
 
   protected slots:
     void on_okButton_clicked();
@@ -56,12 +59,13 @@ class properties : public QDialog, private Ui::properties{
     void riseSelectedTracker();
 
   signals:
-    void changedFilteredFiles(torrent_handle h, bool compact_mode);
-    void fileSizeChanged(QString fileHash);
+    void filteredFilesChanged(const QString& fileHash);
+    void fileSizeChanged(const QString& fileHash);
+    void mustHaveFullAllocationMode(torrent_handle h);
 
   public:
     // Constructor
-    properties(QWidget *parent, torrent_handle &h, QStringList trackerErrors = QStringList());
+    properties(QWidget *parent, bittorrent *BTSession, torrent_handle &h, QStringList trackerErrors = QStringList());
     ~properties();
 };