--- extension.js.orig	2012-03-31 21:13:50.655485237 +0900
+++ extension.js	2012-03-31 21:52:59.566887269 +0900
@@ -794,7 +794,7 @@
         elt: 'thermal',
         color_name: ['tz0'],
         _init: function() {
-            this.temperature = -273.15;
+            this.temperature = 0;
             this.menu_item = new PopupMenu.PopupMenuItem(_("Thermal"), {reactive: false});
             ElementBase.prototype._init.call(this);
             this.tip_format('\u2103');
@@ -815,8 +815,8 @@
         },
         _apply: function() {
             this.text_items[0].text = this.menu_items[3].text = this.temperature.toString();
-            this.vals = [this.temperature];
-            this.tip_vals[0] = Math.round(this.vals[0]);
+            this.vals = [ this.temperature / 100 ];
+            this.tip_vals[0] = Math.round(this.temperature);
         },
         create_text_items: function() {
             return [new St.Label({ style_class: "sm-status-value"}),