diff --git a/pam.changes b/pam.changes
index 87ac646..bd564c5 100644
--- a/pam.changes
+++ b/pam.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Dec  4 12:34:56 CET 2008 - olh@suse.de
+
+- obsolete old -XXbit packages (bnc#437293)
+
 -------------------------------------------------------------------
 Thu Nov 27 15:56:51 CET 2008 - mc@suse.de
 
diff --git a/pam.spec b/pam.spec
index fb4bccf..b39a511 100644
--- a/pam.spec
+++ b/pam.spec
@@ -34,8 +34,16 @@ BuildRequires:  libselinux-devel
 License:        BSD 3-Clause; GPL v2 or later
 Group:          System/Libraries
 AutoReqProv:    on
+# bug437293
+%ifarch ppc64
+Obsoletes:      pam-64bit
+%endif
+%ifarch  %ix86 ppc
+Obsoletes:      pam-32bit
+%endif
+#
 Version:        1.0.2
-Release:        13
+Release:        14
 Summary:        A Security Tool that Provides Authentication for Applications
 Source:         Linux-PAM-%{version}.tar.bz2
 Source1:        Linux-PAM-%{version}-SUSE-docs.tar.bz2
@@ -92,6 +100,14 @@ Summary:        Include Files and Libraries for PAM-Development
 Group:          Development/Libraries/C and C++
 Requires:       pam = %{version} glibc-devel
 AutoReqProv:    on
+# bug437293
+%ifarch ppc64
+Obsoletes:      pam-devel-64bit
+%endif
+%ifarch  %ix86 ppc
+Obsoletes:      pam-devel-32bit
+%endif
+#
 
 %description devel
 PAM (Pluggable Authentication Modules) is a system security tool which
@@ -332,6 +348,8 @@ rm -rf $RPM_BUILD_ROOT
 %{_libdir}/libpam_misc.so
 
 %changelog
+* Thu Dec 04 2008 olh@suse.de
+- obsolete old -XXbit packages (bnc#437293)
 * Thu Nov 27 2008 mc@suse.de
 - enhance the man page for limits.conf (bnc#448314)
 * Mon Nov 24 2008 kukuk@suse.de