diff -u unity-5.20.0/debian/changelog unity-5.20.0/debian/changelog
--- unity-5.20.0/debian/changelog
+++ unity-5.20.0/debian/changelog
@@ -1,3 +1,11 @@
+unity (5.20.0-0ubuntu3) precise; urgency=low
+
+  * debian/patches/lp1051921.patch:
+    - lens-bar-keynavigation periodically writes to /tmp/wut.png 
+      (lp: #1051921)
+
+ -- Ritesh Khadgaray <ritesh@canonical.com>  Mon, 19 Aug 2013 13:23:46 +0530
+
 unity (5.20.0-0ubuntu2) precise; urgency=low
 
   * Check to see if the window is supposed to have decorations instead
only in patch2:
unchanged:
--- unity-5.20.0.orig/debian/patches/lp1051921.patch
+++ unity-5.20.0/debian/patches/lp1051921.patch
@@ -0,0 +1,25 @@
+lens-bar-keynavigation periodically writes to /tmp/wut.png 
+Patch from Stephen M. Webb
+
+
+=== modified file 'plugins/unityshell/src/DashStyle.cpp'
+--- a/plugins/unityshell/src/DashStyle.cpp	2012-06-06 13:18:59 +0000
++++ b/plugins/unityshell/src/DashStyle.cpp	2013-08-16 02:52:55 +0000
+@@ -1504,7 +1504,6 @@
+ 
+   // blur and blend overlay onto initial image-surface
+   Blur(blurred_cr, blurSize);
+-  //cairo_surface_write_to_png(surface, "/tmp/overlay-surface.png");
+   cairo_set_source_surface(cr, surface, 0.0, 0.0);
+   old = SetBlendMode(cr, mode);
+   cairo_paint_with_alpha(cr, opacity);
+@@ -1724,8 +1723,6 @@
+               42.0 + 10.0,
+               alignment);
+ 
+-  cairo_surface_write_to_png(cairo_get_target(cr), "/tmp/wut.png");
+-
+   return true;
+ }
+ 
+
only in patch2:
unchanged:
--- unity-5.20.0.orig/debian/patches/series
+++ unity-5.20.0/debian/patches/series
@@ -0,0 +1 @@
+lp1051921.patch