diff -up comm-release/mozilla/configure.in.libpng-10510 comm-release/mozilla/configure.in
--- comm-release/mozilla/configure.in.libpng-10510	2013-11-04 21:36:07.823000000 +0100
+++ comm-release/mozilla/configure.in	2013-11-04 21:42:32.422000000 +0100
@@ -51,7 +51,7 @@ _SUBDIR_CONFIG_ARGS="$ac_configure_args"
 dnl Set the version number of the libs included with mozilla
 dnl ========================================================
 MOZJPEG=62
-MOZPNG=10517
+MOZPNG=10510
 NSPR_VERSION=4
 NSS_VERSION=3