Hello,
if you experience problems of refreshing your phpSysInfo page it might be because of your browser caching the xml.php which updates the values of your system...

to prevent the browser from caching, simply do the following:

1) open phpsysinfo.js in your favourite text editor

2) search for:
$(document).ready(function() {

3) add:
var time = new Date();
var secs = time.getTime();

4) replace:
url: 'xml.php',
with:
url: 'xml.php?query=' + secs,

5) save it...

it should look like this:
$(document).ready(function() {
  var time = new Date();
  var secs = time.getTime();

  $.ajax({
      url: 'xml.php?query=' + secs,

hth
ageye