diff --git a/ChangeLog b/ChangeLog
index 35d2072763..85af9605f7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2008-05-07  Tim-Philipp Müller  <tim.muller at collabora co uk>
+
+	* configure.ac:
+	  Error out if we don't have the required versions of core/base.
+
 2008-05-05  Wim Taymans  <wim.taymans@collabora.co.uk>
 
 	* gst-libs/gst/app/gstappsink.c: (gst_app_sink_class_init),
diff --git a/common b/common
index f6fc3fa764..9b28214399 160000
--- a/common
+++ b/common
@@ -1 +1 @@
-Subproject commit f6fc3fa7643c03eb912f4e259d48c99b0e8d0aca
+Subproject commit 9b28214399156457fd6b43d0604a47e4bdf19c28
diff --git a/configure.ac b/configure.ac
index d3335844db..c4416ca8eb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -45,7 +45,6 @@ AC_LIBTOOL_WIN32_DLL
 AM_PROG_LIBTOOL
 
 dnl *** required versions of GStreamer stuff ***
-dnl *** remove rtpmanager stuff below when this is updated
 GST_REQ=0.10.19
 GSTPB_REQ=0.10.19
 
@@ -158,12 +157,12 @@ fi
 
 dnl checks for gstreamer
 dnl uninstalled is selected preferentially -- see pkg-config(1)
-AG_GST_CHECK_GST($GST_MAJORMINOR, [$GST_REQ])
-AG_GST_CHECK_GST_BASE($GST_MAJORMINOR, [$GST_REQ])
-AG_GST_CHECK_GST_GDP($GST_MAJORMINOR, [$GST_REQ])
+AG_GST_CHECK_GST($GST_MAJORMINOR, [$GST_REQ], yes)
+AG_GST_CHECK_GST_BASE($GST_MAJORMINOR, [$GST_REQ], yes)
+AG_GST_CHECK_GST_GDP($GST_MAJORMINOR, [$GST_REQ], yes)
 AG_GST_CHECK_GST_CHECK($GST_MAJORMINOR, [$GST_REQ], no)
-AG_GST_CHECK_GST_CONTROLLER($GST_MAJORMINOR, [$GST_REQ])
-AG_GST_CHECK_GST_PLUGINS_BASE($GST_MAJORMINOR, [$GSTPB_REQ], no)
+AG_GST_CHECK_GST_CONTROLLER($GST_MAJORMINOR, [$GST_REQ], yes)
+AG_GST_CHECK_GST_PLUGINS_BASE($GST_MAJORMINOR, [$GSTPB_REQ], yes)
 AM_CONDITIONAL(HAVE_GST_CHECK, test "x$HAVE_GST_CHECK" = "xyes")
 
 GSTPB_PLUGINS_DIR=`$PKG_CONFIG gstreamer-plugins-base-$GST_MAJORMINOR --variable pluginsdir`