XMLSerializer Deserialize List<T> issue

Question

When i run the following code to serialize the facbook users, the code generated is something like:

<?xml version="1.0"?> 
<ArrayOfUser 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
    xmlns="fbapp">
    <user>
        <user xmlns="http://api.facebook.com/1.0/"&gt;
            <about_me />
        </user>
    </user>
</ArrayOfUser>

but when i try to read it by de-serializing it, the user (which is generated using a schema) will have the root as <user> instead of <user xmlns="http://api.facebook.com/1.0/"&gt; tag breaking everything.

public static List<facebook.Schema.user> ReadFromFile(String filename)
{
    Stream str = File.OpenRead(filename);
    XmlSerializer formatter = new XmlSerializer(typeof(List<facebook.Schema.user>));
    List<facebook.Schema.user> users = (List<facebook.Schema.user>) formatter.Deserialize(str);
    str.Close();
    return users;
}

public static void WriteToFile(List<facebook.Schema.user> users, String filename)
{
    Stream str;
    // ...open...
    XmlSerializer formatter = new XmlSerializer(typeof(List<facebook.Schema.user>));
    formatter.Serialize(str, users);
    str.Close();
}

EDIT: The class i am trying to view is here: Source at Codeplex (look for the user class)

Also, the problem i feel is that the serialization is adding an extra <user> tag for every list element. I tried to serialize a single user object and even that is wrapped in a <user> tag. So i get something like:

<?xml version="1.0"?>
  <user>
    <user xmlns="http://api.facebook.com/1.0/"&gt;
       ...
    </user>
  </user>

instead of

<?xml version="1.0"?>
  <user xmlns="http://api.facebook.com/1.0/"&gt;
       ...
  </user>