Getting blank page with "Site offline" message, no theming. Following all the installation instructions, even enabling theme in admin->themes
Clearing caches does not help

output:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="" lang="" dir="">
 
<head>
    <title></title>
      <script type="text/javascript"> </script>
</head>
<body class="">
  <div id="page">
    <div id="header">
      <div id="logo-title">
 
        
        <div id="name-and-slogan">
          
                  </div> <!-- /name-and-slogan -->
      </div> <!-- /logo-title -->
 
      
    </div> <!-- /header -->
 
    <div id="container" class="clear-block">
 
      
      <div id="main" class="column"><div id="main-squeeze">
 
        <div id="content">
                              <div id="content-content" class="clear-block">
           Site offline message         </div> <!-- /content-content -->
        </div> <!-- /content -->
 
      </div></div> <!-- /main-squeeze /main -->
 
      
    </div> <!-- /container -->
 
    <div id="footer-wrapper">
      <div id="footer">
                      </div> <!-- /footer -->
    </div> <!-- /footer-wrapper -->
 
  </div> <!-- /page -->
 
</body>
</html>