Step 1 : Simply add this to Manifest file
android:hardwareAccelerated="true"
step 2 : check if you are setting layer for your webview.
(i.e.)
//myWebView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
setting hardware acceleration to true and commenting these lines worked for me .
To know more about Hardware Acceleration and Layers look here at http://developer.android.com/guide/topics/graphics/hardware-accel.html