URGENT !! Same Session IDs but different Sessions

[Mayank Chaturvedi]

I one JSP page I am setting some session values . If I try to access the same session values in the next JSP page , it give NULL . I printed the session IDs in both the pages , it is the same .But if I print the variable "session" directly , they both are different . Can someone tell how and why it happens ?
I am using iPlanet Deployment (IAS 6.0)Tool to deploy the components . But , if without using the Tool if I deploy , it works fine .
Can someone provide a solution for it ?