diff --git a/demo/cabaret/__init__.py b/demo/cabaret/__init__.py
index a7d5dcf..91c6613 100644
--- a/demo/cabaret/__init__.py
+++ b/demo/cabaret/__init__.py
@@ -16,13 +16,14 @@
 #
 # You should have received a copy of the GNU Lesser General Public License
 # along with pygal. If not, see <http://www.gnu.org/licenses/>.
-from flask import Flask, render_template, request
+from flask import Flask, render_template, request, jsonify
 from pygal import CHARTS_BY_NAME
 from pygal.graph import CHARTS_NAMES
 from pygal.config import CONFIG_ITEMS
 from pygal.interpolate import KINDS
 from pygal.style import styles
 from json import loads
+from time import time
 
 
 def create_app():
@@ -50,6 +51,9 @@ def create_app():
         chart = CHARTS_BY_NAME[values['type']](**config)
         for serie in loads(values['vals'])['vals']:
             chart.add(serie[0], serie[1])
-        return chart.render_response()
+        t = time()
+        svg = chart.render()
+        tt = int((time() - t) * 1000)
+        return jsonify(svg=svg, time=tt)
 
     return app
diff --git a/demo/cabaret/static/css.css b/demo/cabaret/static/css.css
index d938ab3..02d3623 100644
--- a/demo/cabaret/static/css.css
+++ b/demo/cabaret/static/css.css
@@ -31,3 +31,7 @@ label {
   font-variant: small-caps;
   color: #777;
 }
+
+.time label {
+  display: inline;
+}
diff --git a/demo/cabaret/static/js.js b/demo/cabaret/static/js.js
index ed5c006..8201537 100644
--- a/demo/cabaret/static/js.js
+++ b/demo/cabaret/static/js.js
@@ -22,6 +22,7 @@ function resend() {
             values = $(this).find('.serie-value').val();
         vals.push([label, values.split(',').map(function (v) { return parseFloat(v); })]);
     });
+    var t = new Date().getTime();
     $.ajax({
         url: '/svg',
         type: 'POST',
@@ -31,11 +32,13 @@ function resend() {
             vals: JSON.stringify({vals: vals}),
             opts: JSON.stringify(opts)
         },
-        dataType: 'html',
+        dataType: 'json',
         traditional: true
     }).done(function (data) {
+        $('.total-time').html('<label>Total time: </label>' +  (new Date().getTime() - t) + 'ms');
+        $('.server-time').html('<label>Generation time:</label> ' + data.time + 'ms');
         // $fig.find('div').get(0).innerHTML = data;
-        $fig.find('div').html(data);
+        $fig.find('div').html(data.svg);
         init_svg($fig.find('svg').get(0));
         $('.nav a').css({color: ''});
     }).fail(function () {
diff --git a/demo/cabaret/templates/_layout.jinja2 b/demo/cabaret/templates/_layout.jinja2
index 26a8ed6..ca03668 100644
--- a/demo/cabaret/templates/_layout.jinja2
+++ b/demo/cabaret/templates/_layout.jinja2
@@ -20,7 +20,7 @@
             <span class="icon-bar"></span>
             <span class="icon-bar"></span>
           </a>
-          <a class="brand" href="#">Cabaret</a>
+          <a class="brand" href="#">Pygal Cabaret</a>
         </div>
       </div>
     </div>
@@ -36,9 +36,19 @@
           {% endblock section %}
         </div>
       </div>
-      <hr>
+      <hr />
       <footer>
-        <p>&copy; Kozea 2012</p>
+        <div class="container-fluid">
+          <div class="row-fluid">
+            <div class="span4">
+              <p class="time total-time"></p>
+            </div>
+            <div class="span4" style="text-align: center">
+              <p class="time server-time"></p>
+            </div>
+            <div class="span4" style="text-align: right">
+              <p class="pull-right">&copy; <a href="http://kozea.fr/">Kozea 2012</a></p>
+            </div>
       </footer>
   </body>
 </html>
diff --git a/pygal/graph/line.py b/pygal/graph/line.py
index a88a550..d4a706b 100644
--- a/pygal/graph/line.py
+++ b/pygal/graph/line.py
@@ -43,7 +43,7 @@ class Line(Graph):
             for serie in self.series
             for val in (serie.interpolated
                         if self.interpolate else serie.points)
-            if val[1] is not None]
+            if val[1] is not None and (not self.logarithmic or val[1] > 0)]
 
     def _fill(self, values):
         """Add extra values to fill the line"""