1) When "Cancel" from the 2nd deck selection was introduced, proper clean up was not implemented of the player information.

It was only handled at the end of the game or when somebody quit in the middle of a game.
    Nothing was done if somebody wanted to choose a differnet Player deck.
2) making clean up of objects a little more explicit in the mtggamezone and GameStateDuel objects

projects/mtg/src/GameStateDuel.cpp

@@ -164,7 +164,7 @@ void GameStateDuel::loadPlayer(int playerId, int decknb, int isAI){
           deck[playerId] = mPlayers[playerId]->game;
     }
   }
-  else { //Random AI deck
+  else { //Random deck
     AIPlayerFactory playerCreator;
     Player * opponent = NULL;
     if (playerId == 1) opponent = mPlayers[0];
@@ -203,9 +203,14 @@ void GameStateDuel::End()
   DebugTrace("Ending GameStateDuel");
 
   JRenderer::GetInstance()->EnableVSync(false);
-  if (mPlayers[0] && mPlayers[1]) mPlayers[0]->End();
-  GameObserver::EndInstance();
   DeckManager::EndInstance();
+
+  if (mPlayers[0] && mPlayers[1]) // save the stats for the game
+    mPlayers[0]->End();
+  else // clean up player object
+    SAFE_DELETE( mPlayers[0] );
+
+  GameObserver::EndInstance();
   game = NULL;
   premadeDeck = false;
 
@@ -309,7 +314,8 @@ void GameStateDuel::Update(float dt)
         if (mParent->players[0] ==  PLAYER_TYPE_HUMAN){
           ensureOpponentMenu();
           opponentMenu->Update(dt);
-        }else{
+        }
+        else{
           loadPlayer(1);
           mGamePhase = DUEL_STATE_PLAY;
         }

projects/mtg/src/MTGGameZones.cpp

@@ -353,8 +353,11 @@ MTGGameZone::MTGGameZone() : nb_cards(0), lastCardDrawn(NULL), needShuffle(false
 
 MTGGameZone::~MTGGameZone(){
   for (int i=0; i<nb_cards; i++) {
-    delete cards[i];
+    SAFE_DELETE( cards[i] );
   }
+  cards.clear();
+  cardsMap.clear();
+  owner = NULL;
 }
 
 void MTGGameZone::setOwner(Player * player){