it looks like some proxy servers are caching our pages and when visitors hit <back> button in their browser they get pages that were dated few days back
is there a way to avoid this from happening ?
disable cashing can be done by adding it to the headers of your website like:
<meta http-equiv="cache-control" content="no-cache"> for webclient
or more proxy advising:
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="expires" content="0">