diff --git a/seahub/templates/sysadmin/sys_useradmin.html b/seahub/templates/sysadmin/sys_useradmin.html
index 289041fb5c..f6f10dcaf6 100644
--- a/seahub/templates/sysadmin/sys_useradmin.html
+++ b/seahub/templates/sysadmin/sys_useradmin.html
@@ -15,7 +15,7 @@
         {% if have_ldap %}
         <li class="tabnav-tab"><a href="{% url 'sys_useradmin_ldap' %}">{% trans "LDAP" %}</a></li>
         {% endif %}
-        <li class="tabnav-tab"><a href="{% url 'sys_useradmin_admins' %}">{% trans "Admin" %}</a></li>
+        <li class="tabnav-tab"><a href="{% url 'sys_useradmin_admins' %}">{% trans "Admins" %}</a></li>
     </ul>
     <button id="add-user-btn" class="fright"><img src="{{ MEDIA_URL }}img/add.png" alt="" class="add vam" /><span class="vam">{% trans "Add user" %}</span></button>
 </div>
@@ -42,6 +42,22 @@
 
 {% block extra_script %}
 <script type="text/javascript">
+$(function(){
+    // check if server version is the latest one
+    $.ajax({
+        url: 'http://seafile.com/ajax/check_server_version/?v=' + e('{{seafile_version}}') + '&p=' + e('{{platform}}'),
+        dataType: 'jsonp',
+        jsonpCallback: 'xx',
+        crossDomain: true,
+        success: function(data) {
+            if (data['need_update']) {
+                var tip = "{% trans "A new server version %(v)s is available." %}";
+                tip = tip.replace('%(v)s', data['new_version']);
+                $('#title-panel').html('<p class="alc" style="background:#fddaa4;color:#1f0600;padding:3px 0;margin:0 0 15px;">' + tip + '</p>').removeClass('hide');
+            }
+        }
+    });
+});
 $('#add-user-form').submit(function() {
     var form = $(this),
         form_id = $(this).attr('id'),
diff --git a/seahub/templates/sysadmin/sys_useradmin_admins.html b/seahub/templates/sysadmin/sys_useradmin_admins.html
index b013d59993..58cbc385de 100644
--- a/seahub/templates/sysadmin/sys_useradmin_admins.html
+++ b/seahub/templates/sysadmin/sys_useradmin_admins.html
@@ -15,7 +15,7 @@
         {% if have_ldap %}
         <li class="tabnav-tab"><a href="{% url 'sys_useradmin_ldap' %}">{% trans "LDAP" %}</a></li>
         {% endif %}
-        <li class="tabnav-tab tabnav-tab-cur"><a href="{% url 'sys_useradmin_admins' %}">{% trans "Admin" %}</a></li>
+        <li class="tabnav-tab tabnav-tab-cur"><a href="{% url 'sys_useradmin_admins' %}">{% trans "Admins" %}</a></li>
     </ul>
     <button id="add-admin-btn" class="fright"><img src="{{ MEDIA_URL }}img/add.png" alt="" class="add vam" /><span class="vam">{% trans "Add admin" %}</span></button>
 </div>
diff --git a/seahub/templates/sysadmin/sys_useradmin_ldap.html b/seahub/templates/sysadmin/sys_useradmin_ldap.html
index c7121f249e..d5326c8822 100644
--- a/seahub/templates/sysadmin/sys_useradmin_ldap.html
+++ b/seahub/templates/sysadmin/sys_useradmin_ldap.html
@@ -14,7 +14,7 @@
     <ul class="tabnav-tabs">
         <li class="tabnav-tab"><a href="{% url 'sys_useradmin' %}">{% trans "Database" %}</a></li>
         <li class="tabnav-tab tabnav-tab-cur"><a href="{% url 'sys_useradmin_ldap' %}">{% trans "LDAP" %}</a></li>
-        <li class="tabnav-tab"><a href="{% url 'sys_useradmin_admins' %}">{% trans "Admin" %}</a></li>
+        <li class="tabnav-tab"><a href="{% url 'sys_useradmin_admins' %}">{% trans "Admins" %}</a></li>
     </ul>
 </div>
 
diff --git a/seahub/views/sysadmin.py b/seahub/views/sysadmin.py
index 89cd804d0e..7647c81579 100644
--- a/seahub/views/sysadmin.py
+++ b/seahub/views/sysadmin.py
@@ -185,6 +185,9 @@ def sys_user_admin(request):
 
     have_ldap = True if len(get_emailusers('LDAP', 0, 1)) > 0 else False
 
+    from seahub.utils.sysinfo import get_platform_name
+    platform = get_platform_name()
+
     return render_to_response(
         'sysadmin/sys_useradmin.html', {
             'users': users,
@@ -195,6 +198,7 @@ def sys_user_admin(request):
             'page_next': page_next,
             'CALC_SHARE_USAGE': CALC_SHARE_USAGE,
             'have_ldap': have_ldap,
+            'platform': platform,
         },
         context_instance=RequestContext(request))