1. there is no <nobr> in html 4.01 specs.

2. formating looks bad when user has longer clock format or "Last refresh"
string + clock does not fit in default frame width

src/left_main.php

@@ -1007,8 +1007,8 @@ if ($date_format != 6) {
     }
     $clk = str_replace(' ',' ',$clk);
 
-    echo '<nobr><small>' . str_replace(' ','&nbsp;',_("Last Refresh")) .
-         ": $clk</small></nobr><br />";
+    echo '<small>' . str_replace(' ','&nbsp;',_("Last Refresh")) .
+         ":<br />$clk</small><br />";
 }
 
 /* Next, display the refresh button. */