Hello,
We have the same issue using WebSphere 5 on RedHat Linux.
We are using a session bean to keep information. Suddenly the session of one user is associated to another user coming from absolutely different machine (ip). WAS Session menagement security is set to be associate to HTTP session, but nothing comes better. Now we applied fixpack 5.0.2, not having yet enough info is it works better.
This technique we were using for 2 years on JRun and eveything was just fine.
On any result I shall post them here asap.
Regards,
Anglo