I have a single page that I need to on occasion asynchronously check the server to see if the status of the page is current (basically, Live or Offline). You will see I have
You can check if it's a caching issue by adding unique ID to the url:
change url: '/live/live.php', to url: '/live/live.php?'+new Date().getTime(),
url: '/live/live.php',
url: '/live/live.php?'+new Date().getTime(),
Cheers
G.