[news.eclipse.technology.equinox] UserAdmin wrong password data after re

[liareuper@xxxxxxxx (lia)]

Hi,
I?m using the UserAdmin Service to create a user administration and get 
some strange effect when stop and starting equinox?

If  I create a user with 

User user = (User) userAdmin.createRole("Admin", Role.USER);
user.getProperties().put("login.name", "Admin");
user.getCredentials().put("login.password", "osgi");
((Group)adminstrators).addMember(user);

in an init() Method of my User Administration and then ?close? the equinox 
console equinox stores the data in an preference file on the disk. If I 
open this file I can see my user "Admin" with his password ?osgi?. If I 
now start equinox console again and print a list of all users I see this:
User Admin:
   Properties: {login.name=Admin} 
   Credentials: {login.password=[B@1a5ee7c}

which should normally look like this:

       Properties: {login.name=Admin}
       Credentials: {login.password=osgi}

Has someone n idea why the password is something like this above and not 
the originally one????

Thanks for your answers!