VWP: Session lost after navigating 20 pages in IE6 & IE7

In the known issues of VWP 5.5.1 release notes, it mentions

"In projects with more than 20 pages, session data is lost and information saved in a session bean attribute is reset to Null once user navigates past about page 20. This is not an issue in Firefox or other browsers."

Our project have many JSP pages, and we found that the workaround (change security setting of IE ) mentioned in below released note doesn't work.

http://www.netbeans.org/community/releases/55/1/vwp-release-notes.html#knowniss ues

Is there any other workaround solution instead?

[588 byte] By [waynehua] at [2007-11-27 10:20:45]