diff -u firefox-1.5.dfsg+1.5.0.1/debian/changelog firefox-1.5.dfsg+1.5.0.1/debian/changelog
--- firefox-1.5.dfsg+1.5.0.1/debian/changelog
+++ firefox-1.5.dfsg+1.5.0.1/debian/changelog
@@ -1,3 +1,9 @@
+firefox (1.5.dfsg+1.5.0.1-1ubuntu13) dapper; urgency=low
+
+  * Use update-notifier to signal to the user he has to restart firefox 
+
+ -- Dennis Kaarsemaker <dennis@mirage>  Sun, 16 Apr 2006 12:51:48 +0200
+
 firefox (1.5.dfsg+1.5.0.1-1ubuntu12) dapper; urgency=low
 
   * Sponsored upload for Theppitak Karoonboonyanan
diff -u firefox-1.5.dfsg+1.5.0.1/debian/firefox.postinst firefox-1.5.dfsg+1.5.0.1/debian/firefox.postinst
--- firefox-1.5.dfsg+1.5.0.1/debian/firefox.postinst
+++ firefox-1.5.dfsg+1.5.0.1/debian/firefox.postinst
@@ -20,0 +21,12 @@
+
+if [ "$1" = "upgrade" ] && ps -C firefox-bin >/dev/null && [ -d "/var/lib/update-notifier/user.d" ]; then
+    cat <<EOF > /var/lib/update-notifier/user.d/firefox-restart-required
+Name: Firefox restart required
+Priority: High
+Terminal: False
+DontShowAfterReboot: True
+Description: You installed a new version of the firefox webbrowser. Please
+ restart Firefox.
+EOF
+
+fi