diff --git a/bigbluebutton-client/src/org/bigbluebutton/modules/present/ui/views/SlideView.mxml b/bigbluebutton-client/src/org/bigbluebutton/modules/present/ui/views/SlideView.mxml
index de70c3cf5d..bc1bf231cb 100755
--- a/bigbluebutton-client/src/org/bigbluebutton/modules/present/ui/views/SlideView.mxml
+++ b/bigbluebutton-client/src/org/bigbluebutton/modules/present/ui/views/SlideView.mxml
@@ -178,11 +178,13 @@ with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
 				var deltaCanvasMouseY:Number = this.mouseY - prevMouseY;
 				prevMouseX = this.mouseX;
 				prevMouseY = this.mouseY;				
-				slideModel.onMove(deltaCanvasMouseX, deltaCanvasMouseY); 
-				slideModel.printViewedRegion();
-				slideModel.displayPresenterView();
-				fitSlideToLoader();		
-				notifyOthersOfZoomEvent();
+				var xyChange:Boolean = slideModel.onMove(deltaCanvasMouseX, deltaCanvasMouseY);
+				if (xyChange) {
+					slideModel.printViewedRegion();
+					slideModel.displayPresenterView();
+					fitSlideToLoader();
+					notifyOthersOfZoomEvent();
+				}
 			}
 						
 			/**
@@ -232,12 +234,13 @@ with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
 			 * Triggered when the presenter uses the mouse wheel to zoom in/out of the slide.
 			 */
 			private function onMouseWheelZoomEvent(e:MouseEvent):void {
+				var newZoomPercentage:Number = zoomPercentage;
 				if (presenterIsZoomingOut(e.delta)) {
-					zoomPercentage -= ZOOM_STEP;
+					newZoomPercentage -= ZOOM_STEP;
 				} else {
-					zoomPercentage += ZOOM_STEP;
+					newZoomPercentage += ZOOM_STEP;
 				}
-				zoomSlide(zoomPercentage, this.mouseX, this.mouseY);		
+				zoomSlide(newZoomPercentage, this.mouseX, this.mouseY);
 			}
 			
 			public function switchToFitToPage(ftp:Boolean):void {
@@ -251,17 +254,21 @@ with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
 			}
 			
 			private function zoomSlide(zoom:Number, mouseX:Number, mouseY:Number):void {
-				zoomPercentage = zoom;
-				if (zoomPercentage <= SlideViewModel.HUNDRED_PERCENT) {
-					zoomPercentage = SlideViewModel.HUNDRED_PERCENT;
-				} else if (zoomPercentage >= SlideViewModel.MAX_ZOOM_PERCENT) {
-					zoomPercentage = SlideViewModel.MAX_ZOOM_PERCENT
+				if (zoom <= SlideViewModel.HUNDRED_PERCENT) {
+					zoom = SlideViewModel.HUNDRED_PERCENT;
+				} else if (zoom >= SlideViewModel.MAX_ZOOM_PERCENT) {
+					zoom = SlideViewModel.MAX_ZOOM_PERCENT
+				}
+				
+				if (zoom != zoomPercentage) {
+					zoomPercentage = zoom;
+					
+					slideModel.onZoom(zoomPercentage, mouseX, mouseY);
+					slideModel.printViewedRegion();
+					slideModel.displayPresenterView();
+					fitSlideToLoader();
+					notifyOthersOfZoomEvent();
 				}
-				slideModel.onZoom(zoomPercentage, mouseX, mouseY);
-				slideModel.printViewedRegion();
-				slideModel.displayPresenterView();
-				fitSlideToLoader();	
-				notifyOthersOfZoomEvent();	
 			}
 									
 			private function notifyOthersOfZoomEvent():void {
diff --git a/bigbluebutton-client/src/org/bigbluebutton/modules/present/ui/views/models/SlideViewModel.as b/bigbluebutton-client/src/org/bigbluebutton/modules/present/ui/views/models/SlideViewModel.as
old mode 100644
new mode 100755
index 5ae5317df4..c32cacdc17
--- a/bigbluebutton-client/src/org/bigbluebutton/modules/present/ui/views/models/SlideViewModel.as
+++ b/bigbluebutton-client/src/org/bigbluebutton/modules/present/ui/views/models/SlideViewModel.as
@@ -150,7 +150,7 @@ package org.bigbluebutton.modules.present.ui.views.models
 				_calcPageW = (viewportW/_viewedRegionW) * HUNDRED_PERCENT;
 				_calcPageH = (_pageOrigH/_pageOrigW) * _calcPageW;
 				calcViewedRegion();
-				onResizeMove();				
+				doBoundsValidation();
 			}
 		}
 		
@@ -186,17 +186,27 @@ package org.bigbluebutton.modules.present.ui.views.models
 			}			
 		}
 		
-		private function onResizeMove():void {		
+		private function doBoundsValidation():void {
 			doWidthBoundsDetection();
 			doHeightBoundsDetection();
 		}
 		
-		public function onMove(deltaX:Number, deltaY:Number):void {
+		/** Returns whether or not the page actually moved */
+		public function onMove(deltaX:Number, deltaY:Number):Boolean {
+			var oldX:Number = _calcPageX;
+			var oldY:Number = _calcPageY;
+			
 			_calcPageX += deltaX / MYSTERY_NUM;
 			_calcPageY += deltaY / MYSTERY_NUM;
 			
-			onResizeMove();	
-			calcViewedRegion();
+			doBoundsValidation();
+			
+			if (oldX != _calcPageX || oldY != _calcPageY) {
+				calcViewedRegion();
+				return true;
+			} else {
+				return false;
+			}
 		}
 		
 		public function calculateViewportSize():void {