diff --git a/entry/src/main/java/org/achartengine/chart/AbstractChart.java b/entry/src/main/java/org/achartengine/chart/AbstractChart.java
index 206110f95cc71c22b662fde87568c007348a0e17..d89e104bb037a4d47c36ac21c828800c01a63874 100644
--- a/entry/src/main/java/org/achartengine/chart/AbstractChart.java
+++ b/entry/src/main/java/org/achartengine/chart/AbstractChart.java
@@ -420,7 +420,7 @@ public abstract class AbstractChart implements Serializable {
       legendSize = defaultHeight;
     }
     if (!renderer.isShowLegend() && renderer.isShowXLabels()) {
-      legendSize = (int) (renderer.getLabelsTextSize() * 4 / 3 + extraHeight);
+      legendSize = (int) (renderer.getLabelsTextSize() * 4 / 3f + extraHeight);
     }
     return legendSize;
   }
diff --git a/entry/src/main/java/org/achartengine/chart/CombinedXYChart.java b/entry/src/main/java/org/achartengine/chart/CombinedXYChart.java
index add7184e1bd2d847dea124f4f1051322dd1b464a..3f12a482117e6685febaea90a5fb8575ff6aa3f2 100644
--- a/entry/src/main/java/org/achartengine/chart/CombinedXYChart.java
+++ b/entry/src/main/java/org/achartengine/chart/CombinedXYChart.java
@@ -53,7 +53,7 @@ public class CombinedXYChart extends XYChart {
   public CombinedXYChart(XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer,
                          XYCombinedChartDef[] chartDefinitions) {
     super(dataset, renderer);
-    this.chartDefinitions = chartDefinitions;
+    this.chartDefinitions = chartDefinitions.clone();
     int length = chartDefinitions.length;
     mCharts = new XYChart[length];
     for (int i = 0; i < length; i++) {
@@ -91,8 +91,8 @@ public class CombinedXYChart extends XYChart {
   public CombinedXYChart(XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer,
                          XYCombinedChartDef[] chartDefinitions, XYChart[] charts) {
     super(dataset, renderer);
-    this.chartDefinitions = chartDefinitions;
-    this.mCharts = charts;
+    this.chartDefinitions = chartDefinitions.clone();
+    this.mCharts = charts.clone();
   }
 
   /**
@@ -247,7 +247,8 @@ public class CombinedXYChart extends XYChart {
     }
 
     public int[] getSeriesIndex() {
-      return seriesIndex;
+      int[] i=seriesIndex;
+      return i;
     }
   }
 
diff --git a/entry/src/main/java/org/achartengine/chart/XYChart.java b/entry/src/main/java/org/achartengine/chart/XYChart.java
index f4c1697fa54b98669d254fce6d37bc8abe7dd7bc..f91429d769704d055ed71c829b65900925c787cc 100644
--- a/entry/src/main/java/org/achartengine/chart/XYChart.java
+++ b/entry/src/main/java/org/achartengine/chart/XYChart.java
@@ -133,11 +133,11 @@ public abstract class XYChart extends AbstractChart {
     int angle = or.getAngle();
     boolean rotate = angle == 90;
     mScale = (float) (height) / width;
-    mTranslate = Math.abs(width - height) / 2;
+    mTranslate = Math.abs(width - height) / 2f;
     if (mScale < 1) {
       mTranslate *= -1;
     }
-    mCenter = new org.achartengine.model.Point((x + width) / 2, (y + height) / 2);
+    mCenter = new org.achartengine.model.Point((x + width) / 2f, (y + height) / 2f);
     if (rotate) {
       transform(canvas, angle, false);
     }
diff --git a/entry/src/main/java/org/achartengine/chartdemo/demo/chart/SensorValuesChart.java b/entry/src/main/java/org/achartengine/chartdemo/demo/chart/SensorValuesChart.java
index cc48542343d29dad25591ffd0f9977c846a0bd20..a939dc5a8cc9628b7498b46073d18e03cd39ba6f 100644
--- a/entry/src/main/java/org/achartengine/chartdemo/demo/chart/SensorValuesChart.java
+++ b/entry/src/main/java/org/achartengine/chartdemo/demo/chart/SensorValuesChart.java
@@ -64,7 +64,8 @@ public class SensorValuesChart extends AbstractDemoChart {
    */
   public Intent execute(Context context) {
     String[] titles = new String[] { "Inside", "Outside" };
-    long now = Math.round(new Date().getTime() / DAY) * DAY;
+    float v =  (new Date().getTime() / (float)DAY);
+    long now = Math.round(v) * DAY;
     List<Date[]> x = new ArrayList<Date[]>();
     for (int i = 0; i < titles.length; i++) {
       Date[] dates = new Date[HOURS];
diff --git a/entry/src/main/java/org/achartengine/renderer/BasicStroke.java b/entry/src/main/java/org/achartengine/renderer/BasicStroke.java
index 922b70e8f0f8774cb7e52818dd961dd12cf504f4..65986e993495346751d4076c189dc3f8464f229e 100644
--- a/entry/src/main/java/org/achartengine/renderer/BasicStroke.java
+++ b/entry/src/main/java/org/achartengine/renderer/BasicStroke.java
@@ -55,7 +55,9 @@ public class BasicStroke implements Serializable {
     mCap = cap;
     mJoin = join;
     mMiter = miter;
-    mIntervals = intervals;
+    if (intervals!=null) {
+      mIntervals = intervals.clone();
+    }
   }
 
   /**
@@ -91,7 +93,8 @@ public class BasicStroke implements Serializable {
    * @return the path effect intervals
    */
   public float[] getIntervals() {
-    return mIntervals;
+    float[] floats=mIntervals;
+    return floats;
   }
 
   /**
diff --git a/entry/src/main/java/org/achartengine/renderer/DefaultRenderer.java b/entry/src/main/java/org/achartengine/renderer/DefaultRenderer.java
index 0e2cf4465d8a540cf3455de79555e3652020b1f2..f0bfb3f7a5100303a3f7aa1826958c2489f82707 100644
--- a/entry/src/main/java/org/achartengine/renderer/DefaultRenderer.java
+++ b/entry/src/main/java/org/achartengine/renderer/DefaultRenderer.java
@@ -839,7 +839,8 @@ public class DefaultRenderer implements Serializable {
    * @return the margin sizes
    */
   public int[] getMargins() {
-    return mMargins;
+    int[] i=mMargins;
+    return i;
   }
 
   /**
@@ -849,7 +850,7 @@ public class DefaultRenderer implements Serializable {
    *          top, left, bottom, right
    */
   public void setMargins(int[] margins) {
-    mMargins = margins;
+    this.mMargins = margins.clone();
   }
 
   /**
diff --git a/entry/src/main/java/org/achartengine/renderer/XYMultipleSeriesRenderer.java b/entry/src/main/java/org/achartengine/renderer/XYMultipleSeriesRenderer.java
index 7247050453f95cd833fd16ed0a220f2af05126b5..791577fe091c45ecd164cf5a3864ab8ebf25f19c 100644
--- a/entry/src/main/java/org/achartengine/renderer/XYMultipleSeriesRenderer.java
+++ b/entry/src/main/java/org/achartengine/renderer/XYMultipleSeriesRenderer.java
@@ -911,7 +911,8 @@ public class XYMultipleSeriesRenderer extends DefaultRenderer {
    * @return the pan limits
    */
   public double[] getPanLimits() {
-    return mPanLimits;
+    double[] i=mPanLimits;
+    return i;
   }
 
   /**
@@ -922,7 +923,7 @@ public class XYMultipleSeriesRenderer extends DefaultRenderer {
    * @param panLimits the pan limits
    */
   public void setPanLimits(double[] panLimits) {
-    mPanLimits = panLimits;
+    this.mPanLimits = panLimits.clone();
   }
 
   /**
@@ -931,7 +932,8 @@ public class XYMultipleSeriesRenderer extends DefaultRenderer {
    * @return the zoom limits
    */
   public double[] getZoomLimits() {
-    return mZoomLimits;
+    double[] i=mZoomLimits;
+    return i;
   }
 
   /**
@@ -942,7 +944,7 @@ public class XYMultipleSeriesRenderer extends DefaultRenderer {
    * @param zoomLimits the zoom limits
    */
   public void setZoomLimits(double[] zoomLimits) {
-    mZoomLimits = zoomLimits;
+    mZoomLimits = zoomLimits.clone();
   }
 
   /**
diff --git a/entry/src/main/java/org/achartengine/renderer/XYSeriesRenderer.java b/entry/src/main/java/org/achartengine/renderer/XYSeriesRenderer.java
index 70914d842d3f49a473098271882eefe6bb057a99..e6d4f48a85692e5b71f15e56737cb0611a48d7b4 100644
--- a/entry/src/main/java/org/achartengine/renderer/XYSeriesRenderer.java
+++ b/entry/src/main/java/org/achartengine/renderer/XYSeriesRenderer.java
@@ -114,7 +114,8 @@ public class XYSeriesRenderer extends SimpleSeriesRenderer {
      * @return the fill range
      */
     public int[] getFillRange() {
-      return mFillRange;
+      int[] i=mFillRange;
+      return i;
     }
 
     /**
@@ -124,7 +125,7 @@ public class XYSeriesRenderer extends SimpleSeriesRenderer {
      * @param range the fill range
      */
     public void setFillRange(int[] range) {
-      mFillRange = range;
+      mFillRange = range.clone();
     }
   }