JDK 1.5 b49

I start a JMX connector server and use a security manager and a policy file.
I use option jmx.remote.x.password.file to point to my user/password file.
When an instance of com.sun.jmx.remote.security.JMXPluggableAuthenticator is created internally, it creates a com.sun.jmx.remote.security.FileLoginModule and it is when FileLoginModule.commit() that it fails.