This is driving my client nuts...

"The form you have submitted is no longer valid.

Please use your back button to return to the previous page."

Any ideas?

J.C.

I had this when I was playing with headers and the expiry time. Do you know what headers you serve? The server might be configured with modExpire or something like that. These are mine and they do the job fine thanks to Rick

Cache-Control: private
Pragma: no-cache

and so as the headers on this forum.

If you don't know how to view them try http://web-sniffer.net/

Thank you for the info, will look into this.

We've got the same problem. Nothing special installed or configured. mod_Expire is unused. Where can I change these Cache-Control settings?

Have run into this on this very board.

I think it's when you open up the reply box and then don't send a reply for a very long time. At least that's when it happens to me.

I found this at web-sniffer.net:

Date: Mon, 19 Jun 2006 21:07:06 GMT
Set-Cookie: PHPSESSID=4d0cfb1b0b27fd571b993a52bfce9285; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: private
Pragma: no-cache

Is the Expires parameter correct?