There is a typo:

diff --git a/pages/community/nav.php b/pages/community/nav.php
index 3f10222..82889aa 100644
--- a/pages/community/nav.php
+++ b/pages/community/nav.php
@@ -6,7 +6,7 @@
                </a>
        </li>
        <li>
-               <a href="http://blog.xfce.or"><?php E_('Blog') ?>
+               <a href="http://blog.xfce.org"><?php E_('Blog') ?>
                        <span>&ndash; <?php E_('read what the contributors to Xf
                </a>
        </li>