[news.eclipse.platform.rcp] JAAS config: cannot find jaas.conf file

["N.Lupanov" <nlupanov@xxxxxxxxxxxxxxxxx>]

I am trying to use JAAS with my rich client plugin.I put the following 
argument
to the java virtual machine in the vm arguments tab of run properties of 
eclipse application:

-Djava.security.auth.login.config=jaas.config

Then when i try to retrieve the username of the current user i get :

jaas.config (No such file or directory)

I have placed this file all over the directory structure but i found myself 
unable to find the place where plugin expects it.It wirked fine with 
standalone application but this problem arise when i try to integrate it in 
eclipse as a plugin