Sun GlassFish Enterprise Server 2.1 Release Notes

Description

Cookies with a path equal to “/” interfere with the cookies of a highly available web application deployed at a context root other than “/” that uses in-memory replication as its persistence type, making it impossible for the highly available web application to maintain any HTTP session state. One common scenario where this may happen is when using the same browser to access both the Admin GUI (which is deployed at “/”) and the highly available web application.