=== modified file 'dhis-2/dhis-services/dhis-service-options/src/main/java/org/hisp/dhis/options/SystemSettingManager.java'
--- dhis-2/dhis-services/dhis-service-options/src/main/java/org/hisp/dhis/options/SystemSettingManager.java	2011-04-04 17:23:41 +0000
+++ dhis-2/dhis-services/dhis-service-options/src/main/java/org/hisp/dhis/options/SystemSettingManager.java	2011-04-11 15:42:51 +0000
@@ -56,7 +56,6 @@
     final String KEY_COMPLETENESS_OFFSET = "completenessOffset";
     final String KEY_PATIENT_EXCEL_TEMPLATE_FILE_NAME = "patientExcelTemplateFileName";
     
-    final String DEFAULT_SYSTEM_IDENTIFIER = "http://dhis2.org";
     final int DEFAULT_MAX_NUMBER_OF_ATTEMPTS = 20;
     final int DEFAULT_TIMEFRAME_MINUTES = 1;
     final double DEFAULT_FACTOR_OF_DEVIATION = 2.0;

=== modified file 'dhis-2/dhis-services/dhis-service-options/src/main/java/org/hisp/dhis/options/setting/DefaultSystemSettingManager.java'
--- dhis-2/dhis-services/dhis-service-options/src/main/java/org/hisp/dhis/options/setting/DefaultSystemSettingManager.java	2011-04-04 17:23:41 +0000
+++ dhis-2/dhis-services/dhis-service-options/src/main/java/org/hisp/dhis/options/setting/DefaultSystemSettingManager.java	2011-04-11 15:42:51 +0000
@@ -139,6 +139,6 @@
     
     public String getSystemIdentifier()
     {
-        return (String) getSystemSetting( KEY_SYSTEM_IDENTIFIER, DEFAULT_SYSTEM_IDENTIFIER );
+        return (String) getSystemSetting( KEY_SYSTEM_IDENTIFIER );
     }
 }

=== modified file 'dhis-2/dhis-web/dhis-web-maintenance/dhis-web-maintenance-settings/src/main/resources/org/hisp/dhis/settings/i18n_module.properties'
--- dhis-2/dhis-web/dhis-web-maintenance/dhis-web-maintenance-settings/src/main/resources/org/hisp/dhis/settings/i18n_module.properties	2011-04-05 18:10:58 +0000
+++ dhis-2/dhis-web/dhis-web-maintenance/dhis-web-maintenance-settings/src/main/resources/org/hisp/dhis/settings/i18n_module.properties	2011-04-11 15:42:51 +0000
@@ -86,4 +86,5 @@
 real_time = Real-time
 batch = Batch
 days_after_period_timeliness = Days after period end to qualify for timely data submission
-system_identifier = System identifier
\ No newline at end of file
+system_identifier = System identifier
+can_be_set_once = can only be set once
\ No newline at end of file

=== modified file 'dhis-2/dhis-web/dhis-web-maintenance/dhis-web-maintenance-settings/src/main/webapp/dhis-web-maintenance-settings/systemSettings.vm'
--- dhis-2/dhis-web/dhis-web-maintenance/dhis-web-maintenance-settings/src/main/webapp/dhis-web-maintenance-settings/systemSettings.vm	2011-04-04 17:23:41 +0000
+++ dhis-2/dhis-web/dhis-web-maintenance/dhis-web-maintenance-settings/src/main/webapp/dhis-web-maintenance-settings/systemSettings.vm	2011-04-11 15:42:51 +0000
@@ -3,9 +3,9 @@
 
 <form id="systemSettingForm" method="post" action="setSystemSettings.action">
 
-<h4>$i18n.getString( "system_identifier" )</h4>
+<h4>$i18n.getString( "system_identifier" ) ($i18n.getString( "can_be_set_once" ))</h4>
 
-<p><input type="text" name="systemIdentifier" style="width:30em" maxlength="40" value="$!keySystemIdentifier"/></p>
+<p><input type="text" name="systemIdentifier" style="width:30em" maxlength="40" value="$!keySystemIdentifier"#if( $keySystemIdentifier ) disabled="disabled"#end/></p>
 
 <h4>$i18n.getString( "application_title" )</h4>