diff --git a/glib2.changes b/glib2.changes
index 331770c..b2d354e 100644
--- a/glib2.changes
+++ b/glib2.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Mon Nov 24 12:34:56 CET 2008 - olh@suse.de
+
+- obsolete old -XXbit packages (bnc#437293)
+
 -------------------------------------------------------------------
 Tue Nov 11 16:54:09 CET 2008 - ro@suse.de
 
diff --git a/glib2.spec b/glib2.spec
index 7fa7f75..74d3831 100644
--- a/glib2.spec
+++ b/glib2.spec
@@ -27,8 +27,16 @@ BuildRequires:  libselinux-devel
 License:        LGPL v2.1 or later
 Group:          Development/Libraries/C and C++
 AutoReqProv:    on
+# bug437293
+%ifarch ppc64
+Obsoletes:      glib2-64bit
+%endif
+%ifarch  %ix86 ppc
+Obsoletes:      glib2-32bit
+%endif
+#
 Version:        2.18.2
-Release:        3
+Release:        4
 Summary:        A Library with Convenient Functions Written in C
 Url:            http://www.gtk.org/
 Source:         ftp://ftp.gnome.org/pub/GNOME/sources/%{_name}/2.14/%{_name}-%{version}.tar.bz2
@@ -142,6 +150,14 @@ Requires:       libgobject-2_0-0 = %{version}
 Summary:        Include files and libraries mandatory for development
 Group:          Development/Libraries/C and C++
 AutoReqProv:    on
+# bug437293
+%ifarch ppc64
+Obsoletes:      glib2-devel-64bit
+%endif
+%ifarch  %ix86 ppc
+Obsoletes:      glib2-devel-32bit
+%endif
+#
 
 %description devel
 This package contains all necessary include files, libraries,
@@ -175,6 +191,14 @@ License:        LGPL v2.1 or later
 Summary:        A Library with Convenient Functions Written in C
 Group:          Development/Libraries/C and C++
 Requires:       %{name} = %{version}
+# bug437293
+%ifarch ppc64
+Obsoletes:      glib2-64bit
+%endif
+%ifarch  %ix86 ppc
+Obsoletes:      glib2-32bit
+%endif
+#
 
 %description -n libglib-2_0-0
 This library provides convenient functions, such as lists and hashes,
@@ -204,6 +228,14 @@ License:        LGPL v2.1 or later
 Summary:        A Library with Convenient Functions Written in C
 Group:          Development/Libraries/C and C++
 Requires:       %{name} = %{version}
+# bug437293
+%ifarch ppc64
+Obsoletes:      glib2-64bit
+%endif
+%ifarch  %ix86 ppc
+Obsoletes:      glib2-32bit
+%endif
+#
 
 %description -n libgmodule-2_0-0
 This library provides convenient functions, such as lists and hashes,
@@ -233,6 +265,14 @@ License:        LGPL v2.1 or later
 Summary:        A Library with Convenient Functions Written in C
 Group:          Development/Libraries/C and C++
 Requires:       %{name} = %{version}
+# bug437293
+%ifarch ppc64
+Obsoletes:      glib2-64bit
+%endif
+%ifarch  %ix86 ppc
+Obsoletes:      glib2-32bit
+%endif
+#
 # Temporarily disable this, pending further discussion
 # Recommends:     gvfs
 
@@ -293,6 +333,14 @@ License:        LGPL v2.1 or later
 Summary:        A Library with Convenient Functions Written in C
 Group:          Development/Libraries/C and C++
 Requires:       %{name} = %{version}
+# bug437293
+%ifarch ppc64
+Obsoletes:      glib2-64bit
+%endif
+%ifarch  %ix86 ppc
+Obsoletes:      glib2-32bit
+%endif
+#
 
 %description -n libgthread-2_0-0
 This library provides convenient functions, such as lists and hashes,
@@ -322,6 +370,14 @@ License:        LGPL v2.1 or later
 Summary:        A Library with Convenient Functions Written in C
 Group:          Development/Libraries/C and C++
 Requires:       %{name} = %{version}
+# bug437293
+%ifarch ppc64
+Obsoletes:      glib2-64bit
+%endif
+%ifarch  %ix86 ppc
+Obsoletes:      glib2-32bit
+%endif
+#
 
 %description -n libgobject-2_0-0
 This library provides convenient functions, such as lists and hashes,
@@ -524,6 +580,8 @@ rm -rf $RPM_BUILD_ROOT
 %dir %{_datadir}/gtk-doc/html
 
 %changelog
+* Mon Nov 24 2008 olh@suse.de
+- obsolete old -XXbit packages (bnc#437293)
 * Tue Nov 11 2008 ro@suse.de
 - SLE-11 uses PPC64 instead of PPC, adapt baselibs.conf
 * Thu Nov 06 2008 federico@novell.com