I hava a screen on web,there is an iframe,the content displayed in frame is depands on the parameter pass
for ex.,:
form.action="thepage.jsp?para=A"
then the iframe display contentA
if form.action="thepage.jsp?para=B"
then the iframe display contentB

what's stenge is:
userA from pcA access the server and do
form.action="thepage.jsp?para=A"
the userB from pcB do:
if form.action="thepage.jsp?para=B"
at the same time,the contentB display on both pc
why? what's the solution?
I'm using JBoss 3.2.3

I figured out something.
my code in jsp like

String name=request.getParameter("para");
out.println("name1="+name);
pe.doSomething(name);

I figured out something.
my code in jsp like

String name=request.getParameter("para");
out.println("name1="+name);
pe.doSomething(name); //call a stateless ejb method.in this method,only use never change the name
out.println("name2="+name);

when 2 user come in at same time, use
form.action="thepage.jsp?para=A"
the userB from pcB do:
form.action="thepage.jsp?para=B"

some times,it print name1=A name2=B

I put
<%@ page isThreadSafe ="false"%>
it doesn't happen.
so,how can I find out why my code is not thread safe?