TO CUSTOMERS WHO MAY BE EXPERIENCING THIS ISSUE

This problem is caused because JIRA 4.2 add new entries into seraph-config.xml.

In the parameters section of seraph-config.xml a new login cookie key is defined:

   <init-param>
      <param-name>login.cookie.key</param-name>
      <param-value>seraph.rememberme.cookie</param-value>
    </init-param>

These addition lines controls the Remember Me functionality.

Customers who simply copy their old seraph-config.xml over the one that ships with JIRA will in effect remove this data.

Customers will then need to re-add these lines in order to get Remember Me functionality to work as expected.