--- lxpanel-0.3.8.1/data/default/panels/panel.in  2008-05-25 11:02:47.000000000 +0200+

+++ lxpanel-0.3.8.1.fixed/data/default/panels/panel.in  2008-05-25 11:02:47.000000000 +0200+
@@ -53,10 +53,13 @@
             id=pcmanfm.desktop
         }
         Button {
-            id=gnome-terminal.desktop
+            id=lxde-xterm.desktop
         }
         Button {
-            id=firefox.desktop
+            id=mozilla-firefox.desktop
+        }
+        Button {
+            id=mozilla-thunderbird.desktop
         }
     }
 }