diff --git a/lib/OpenLayers/Handler/Path.js b/lib/OpenLayers/Handler/Path.js
index 3458be9688..802d36d1d6 100644
--- a/lib/OpenLayers/Handler/Path.js
+++ b/lib/OpenLayers/Handler/Path.js
@@ -79,7 +79,9 @@ OpenLayers.Handler.Path = OpenLayers.Class(OpenLayers.Handler.Point, {
      */
     destroyFeature: function() {
         OpenLayers.Handler.Point.prototype.destroyFeature.apply(this);
-        this.line.destroy();
+        if(this.line) {
+            this.line.destroy();
+        }
         this.line = null;
     },
     
diff --git a/lib/OpenLayers/Handler/Point.js b/lib/OpenLayers/Handler/Point.js
index c31b587980..1efe3a413f 100644
--- a/lib/OpenLayers/Handler/Point.js
+++ b/lib/OpenLayers/Handler/Point.js
@@ -138,7 +138,9 @@ OpenLayers.Handler.Point = OpenLayers.Class(OpenLayers.Handler, {
      * Destroy the temporary geometries
      */
     destroyFeature: function() {
-        this.point.destroy();
+        if(this.point) {
+            this.point.destroy();
+        }
         this.point = null;
     },
 
diff --git a/lib/OpenLayers/Handler/Polygon.js b/lib/OpenLayers/Handler/Polygon.js
index c959aed30a..3f5d9cb4a0 100644
--- a/lib/OpenLayers/Handler/Polygon.js
+++ b/lib/OpenLayers/Handler/Polygon.js
@@ -65,7 +65,9 @@ OpenLayers.Handler.Polygon = OpenLayers.Class(OpenLayers.Handler.Path, {
      */
     destroyFeature: function() {
         OpenLayers.Handler.Path.prototype.destroyFeature.apply(this);
-        this.polygon.destroy();
+        if(this.polygon) {
+            this.polygon.destroy();
+        }
         this.polygon = null;
     },
 
diff --git a/lib/OpenLayers/Layer/EventPane.js b/lib/OpenLayers/Layer/EventPane.js
index 0a209373ab..f184cfcd85 100644
--- a/lib/OpenLayers/Layer/EventPane.js
+++ b/lib/OpenLayers/Layer/EventPane.js
@@ -237,8 +237,6 @@ OpenLayers.Layer.EventPane = OpenLayers.Class(OpenLayers.Layer, {
                 if ( !(newCenter.equals(oldCenter)) || 
                      !(newZoom == oldZoom) ) {
 
-                    var center = this.getMapObjectLonLatFromOLLonLat(newCenter);
-
                     if (dragging && this.dragPanMapObject && 
                         this.smoothDragPan) {
                         var resolution = this.map.getResolution();
@@ -246,6 +244,7 @@ OpenLayers.Layer.EventPane = OpenLayers.Class(OpenLayers.Layer, {
                         var dY = (newCenter.lat - oldCenter.lat) / resolution;
                         this.dragPanMapObject(dX, dY);
                     } else {
+                        var center = this.getMapObjectLonLatFromOLLonLat(newCenter);
                         var zoom = this.getMapObjectZoomFromOLZoom(newZoom);
                         this.setMapObjectCenter(center, zoom, dragging);
                     }
@@ -280,6 +279,18 @@ OpenLayers.Layer.EventPane = OpenLayers.Class(OpenLayers.Layer, {
             var moPixel = this.getMapObjectPixelFromOLPixel(viewPortPx);
             var moLonLat = this.getMapObjectLonLatFromMapObjectPixel(moPixel);
             lonlat = this.getOLLonLatFromMapObjectLonLat(moLonLat);
+            var xrem = this.map.size.w % 2;
+            var yrem = this.map.size.h % 2;
+            if(xrem != 0 || yrem != 0) {
+                // odd sized viewport
+                var olPx = viewPortPx.add(xrem, yrem);
+                var moPx = this.getMapObjectPixelFromOLPixel(olPx);
+                var moLoc = this.getMapObjectLonLatFromMapObjectPixel(moPx);
+                var olLoc = this.getOLLonLatFromMapObjectLonLat(moLoc);
+                // adjust by half a pixel in odd dimension(s)
+                lonlat.lon += (olLoc.lon - lonlat.lon) / 2;
+                lonlat.lat += (olLoc.lat - lonlat.lat) / 2;
+            }
         }
         return lonlat;
     },