Grouper Users - Open Discussion List

I've changed some definitions in my sources file:

1) subject id is now a persistent, non-reassignable, opaque value:

      <param-name>SubjectID_AttributeType</param-name>
      <param-value>brownBRUID</param-value>

... and searchSubject has been changed accordingly...

        <searchType>searchSubject</searchType>
        <param>
            <param-name>filter</param-name>
            <param-value>
                (&amp; (brownBRUID=%TERM%) (objectclass=inetOrgPerson))

2) and searchSubjectByIdentifier now uses uid.....

        <searchType>searchSubjectByIdentifier</searchType>
        <param>
            <param-name>filter</param-name>
            <param-value>
                (&amp; (uid=%TERM%) (objectclass=inetOrgPerson))

3) and I changed my input file:

<group extension="testers" displayExtension="Test Group">
        <list field="members">
		<subject id="010023933"  source='Brown' type='person' 
immediate='true' />
		<subject id="010202803"  source='Brown' type='person' 
immediate='true' />
        </list>
        <privileges type="admin">
                <subject identifier="admins" type="group"/>
                <subject identifier="admins" type="group"/>
        </privileges>
</group>

<group extension="admins" displayExtension="Brown Administrators">
        <list field="members">
		<subject id="010023933"  source='Brown' type='person' 
immediate='true' />
        </list>
        <privileges type="admin">
                <subject identifier="*SELF*" type="group"/>
        </privileges>
</group>

Several questions:

1) I based my file on the sample linked from the wiki page describing 
xml-import.

2) I'm now seeing this in my error log:

2007-02-28 08:29:32,715: searchType: searchSubjectByIdentifier 
filter: (& (uid=GrouperSystem) (objectclass=inetOrgPerson)) base: 
dc=brown,dc=edu scope: SUBTREE_SCOPE
2007-02-28 08:29:32,715: searchType: searchSubjectByIdentifier 
filter: (& (uid=GrouperSystem) (objectclass=inetOrgPerson)) base: 
dc=brown,dc=edu scope: SUBTREE_SCOPE
2007-02-28 08:29:33,278: searchType: searchSubject filter: (& 
(brownBRUID=stc) (objectclass=inetOrgPerson)) base: dc=brown,dc=edu 
scope: SUBTREE_SCOPE
2007-02-28 08:29:33,278: searchType: searchSubject filter: (& 
(brownBRUID=stc) (objectclass=inetOrgPerson)) base: dc=brown,dc=edu 
scope: SUBTREE_SCOPE

however, the strng stc doesn't appear anywhere in my input file......

3) I'm still getting this error in my browser when I attempt to list 
the membership of one of my groups...

 java.lang.RuntimeException: Source not found.  at 
edu.internet2.middleware.grouper.ui.util.MembershipAsMap.(MembershipAsMap.java:71) 
at 
edu.internet2.middleware.grouper.GrouperHelper.memberships2Maps(GrouperHelper.java:2442) 
at 
edu.internet2.middleware.grouper.GrouperHelper.memberships2Maps(GrouperHelper.java:2424) 
at