diff -ur old/webui_templates/system_edit.tmpl build/webui_templates/system_edit.tmpl
--- old/webui_templates/system_edit.tmpl	2008-11-21 13:59:03.000000000 +0100
+++ build/webui_templates/system_edit.tmpl	2008-11-22 13:43:15.000000000 +0100
@@ -558,9 +558,9 @@
         </td>
         <td class="netedit">
         #if $system
-            <input type="text" size="64" style="width: 150px;" name="gateway" id="gateway" />
-        #else
             <input type="text" size="64" style="width: 150px;" name="gateway" id="gateway" value="$system.gateway" />
+        #else
+            <input type="text" size="64" style="width: 150px;" name="gateway" id="gateway" />
         #end if
         <p class="context-tip">Ex: "192.168.1.11".  For use with static IP configs.</p>
         </td>