I have some clients, not all that can not see new content posted to their web sites unless they go in and completely clear their browser cache. Simply hitting refresh on their web browser does not work.

I do not have proxy on in apache and I have Expire set to the following:

ExpiresActive On
ExpiresByType image/gif M60
ExpiresByType text/html M60

Are their any other directives I can put in apache? I understand ISP's are caching more and more stuff. I just have a bunch of clients that say they do not have to do this with other hosts, so I am at a loss as to what else should be done.

Any detailed answer you can give woulld be much appreicated..

This may sound like a stupid question, but have you double checked the data was updated correctly? For example the new file that was uploaded acually replaced the older file? This does seem like a very odd problem. Also have you tried ctrl-refresh?

ISP`s caching content is a real pain as it is completely our of your control, and sometimes hard to spot.

A way to check for "proxy caching" is to put "?something_here" behind the file name so the proxy will think it`s a new file.

Try removing those Expires tags, see if it clears the problem.

Thanks for all your answers. As it turns out the server is working fine and the problem seems to be with the browser. As new content is seen with Netscape and not Explorer.