OC4J session problem - values not sticking in session

Question

OC4J 10g (9.0.4.0.0)
I have been developing with JDeveloper and OC4J for a few years. My machine started to crap out last week (old laptop) so I purchased a new machine. I have installed the same versions of OC4J and JDeveloper on my new machine that were on my old machine. Everything seemed OK but I have noticed that none of the session values are "sticking" between requests, works fine on old machine by the way
Example:
a.jsp
// put a simple value in the session
session.setAttribute("firstName", new String("Chris"));
// later in that same jsp I can retrieve tha value - no problem
String fname = (String)session.getValue("firstName");
b.jsp
// but in a different jsp, the same call to retrieve the value from the session (after running other jsp to set the value) comes back null
String fname = (String)session.getValue("firstName");
The same exact code works great on one machine and not on the other - same versions of OC4J installed.
Anyone seen this before?
Thanks,
Chris

Answer 1

The urls appear to be correct:
http://hostname:8888/contextroot/filename.jsp
The same result can be seen if I re-run one JSP over and over:
<%
Integer bigInt = (Integer)session.getValue("counter");
if (bigInt == null)
session.setAttribute("counter", new Integer(1));
bigInt = new Integer(1);
else
int newCounter = bigInt.intValue() + 1;
session.setAttribute("counter", new Integer(newCounter));
bigInt = new Integer(newCounter);
%>
Counter = <%= bigInt.intValue() %>
If I run this over and over on one machine I see the counter value of 1 each time. On the other it increments.