Looking for an expert on session tracking

I've got some session code running on RH linux using Apache and Tomcat. About 7% of my users experience a session variable not being present after a <jsp:forward> (or sendRedirect). I was thinking that it was related to cookies and how sessions are tracked, but I am using both the default cookie session tracking as well as URL re-writing; when I turn my browser's cookies off, I start seeing the jsessionid being used and everything still seems to work ok.
Is there anyone out there who might be willing to help me figure this pup out...why 7% of my users can't be tracked (session.getAttribute() doesn't find something that was placed into the session directly before the redirect/forward)?
/paul
[email protected]

OK, I've done a bunch of debugging. It appears all the folks who experience a "loss of session" have a URL with no parameters...even though I now parameters where passed.
Also, in some cases, the new URL that is being visited is accessed via either a <jsp:forward> or javascript's window.open.
Anyone know why some browsers might not pass parameters?

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Message was edited by: Dan Foley

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