You know, this is a really long time later, but I don't think this was the proper way to go around it.
Basically some browsers will cache the page. Further, some servers, even ISPs will cache paches. The proper response was probably to tell the browser to not cache the page. You could do something like putting.
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Expires" CONTENT="-1">
In the Head tag. If you were using asp you could add something like the following in the server code.
<% Response.CacheControl = "no-cache" %>
<% Response.AddHeader "Pragma", "no-cache" %>
<% Response.Expires = -1 %>
Richard M.
Grimfang"Whisper"Xaeraes