diff --git a/mrtg.crond.in b/mrtg.crond.in
new file mode 100644
index 0000000..8bdd0d6
--- /dev/null
+++ b/mrtg.crond.in
@@ -0,0 +1 @@
+0-59/5 * * * * root @bindir@/mrtg @sysconfdir@/mrtg/mrtg.cfg
diff --git a/mrtg.spec b/mrtg.spec
index c722c89..343a062 100644
--- a/mrtg.spec
+++ b/mrtg.spec
@@ -1,19 +1,23 @@
+%define _use_internal_dependency_generator 0
+
 %define contentdir       /var/www/html/%{name}
 
 Summary:   Multi Router Traffic Grapher
 Name:      mrtg
 Version:   2.9.17
-Release: 8
+Release: 13
 URL:       http://ee-staff.ethz.ch/~oetiker/webtools/mrtg/mrtg.html
 Source0:   http://www.ee.ethz.ch/~oetiker/webtools/mrtg/pub/%{name}-%{version}.tar.gz
 Source1:   mrtg.cfg
 Source2:   README-14allcgi
 Source3:   14all.cgi
 Source4:   filter-requires-mrtg.sh
+Source5:   mrtg.crond.in
 License:   GPL
 Group:     Applications/Internet
 Requires:  perl >= 5.004
-Requires:  gd
+Requires:  gd 
+PreReq:    vixie-cron, /sbin/service
 Buildroot: %{_tmppath}/%{name}-%{version}-root
 BuildPrereq: freetype-devel, gd-devel, libjpeg-devel, libpng-devel
 
@@ -37,6 +41,7 @@ find contrib -name "*.pl" -exec perl -e 's;\015;;gi' -p -i \{\} \;
 %install
 rm -rf   $RPM_BUILD_ROOT
 mkdir -p $RPM_BUILD_ROOT%{_sysconfdir}/mrtg
+mkdir -p $RPM_BUILD_ROOT%{_sysconfdir}/cron.d
 mkdir -p $RPM_BUILD_ROOT%{contentdir}
 mkdir -p $RPM_BUILD_ROOT%{_bindir}
 mkdir -p $RPM_BUILD_ROOT%{_libdir}/mrtg2/Pod
@@ -46,6 +51,9 @@ install -m 644 images/*   $RPM_BUILD_ROOT%{contentdir}/
 install -m 644 doc/*.html $RPM_BUILD_ROOT%{contentdir}/
 install -m 644 %{SOURCE1} $RPM_BUILD_ROOT/etc/mrtg
 perl -e 's|\@WORKDIR@|%{contentdir}|g' -pi $RPM_BUILD_ROOT/etc/mrtg/mrtg.cfg
+sed -e 's,@bindir@,%{_bindir},g' -e 's,@sysconfdir@,%{_sysconfdir},g' \
+	$RPM_SOURCE_DIR/mrtg.crond.in > $RPM_BUILD_ROOT/%{_sysconfdir}/cron.d/mrtg
+chmod 644 $RPM_BUILD_ROOT/%{_sysconfdir}/cron.d/mrtg
 
 install -m 644 %{SOURCE2} contrib/14all/README
 install -m 755 %{SOURCE3} contrib/14all
@@ -66,18 +74,18 @@ for i in doc/*.1; do
 	install -m 644 $i $RPM_BUILD_ROOT%{_mandir}/man1/
 done 
 
+# Tell crond to reload its configuration.
 %post
-if ! grep '* * * * root %{_bindir}/mrtg' /etc/crontab > /dev/null; then
-	echo "" >> /etc/crontab
-	echo "0-59/5 * * * * root %{_bindir}/mrtg %{_sysconfdir}/mrtg/mrtg.cfg" >> /etc/crontab
-fi
+/sbin/service crond condrestart 2>&1 > /dev/null || :
 
 %postun
-if [ $1 = 0 ]; then
-	grep -v '* * * * root %{_bindir}/mrtg' /etc/crontab > /etc/crontab.new &&\
-	cat /etc/crontab.new > /etc/crontab &&
-	rm /etc/crontab.new
-fi
+/sbin/service crond condrestart 2>&1 > /dev/null || :
+
+# Add a trigger to remove the system crontab version of our tasks.
+%triggerun -- mrtg <= 2.9.17-12
+grep -v '* * * * root %{_bindir}/mrtg' /etc/crontab > /etc/crontab.new &&\
+cat /etc/crontab.new > /etc/crontab &&
+rm /etc/crontab.new
 
 %clean
 rm -rf $RPM_BUILD_ROOT
@@ -87,12 +95,30 @@ rm -rf $RPM_BUILD_ROOT
 %doc contrib ANNOUNCE CHANGES COPYING COPYRIGHT MANIFEST README THANKS
 %dir %{_sysconfdir}/mrtg
 %config(noreplace) %{_sysconfdir}/mrtg/mrtg.cfg
+%config %{_sysconfdir}/cron.d/mrtg
 %{contentdir}
 %{_bindir}/*
 %{_libdir}/mrtg2
 %{_mandir}/*/*
 
 %changelog
+* Fri Feb  7 2003 Nalin Dahyabhai <nalin@redhat.com> 2.9.17-13
+- move crontab data to /etc/cron.d
+- add trigger to remove crontab data from /etc/crontab on removal of
+  older versions
+
+* Wed Jan 22 2003 Tim Powers <timp@redhat.com>
+- rebuilt
+
+* Tue Dec 17 2002 Tim Powers <timp@redhat.com> 2.9.17-11
+- PreReq crontabs
+
+* Sat Dec 14 2002 Tim Powers <timp@redhat.com> 2.9.17-10
+- don't use rpms internal dep generator
+
+* Thu Dec 12 2002 Tim Powers <timp@redhat.com> 2.9.17-9
+- rebuild on all arches
+
 * Fri Jun 21 2002 Tim Powers <timp@redhat.com>
 - automated rebuild