diff --git a/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/server/GcubeCkanDataCatalogServiceImpl.java b/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/server/GcubeCkanDataCatalogServiceImpl.java
index a5e1b4d..c3b468e 100644
--- a/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/server/GcubeCkanDataCatalogServiceImpl.java
+++ b/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/server/GcubeCkanDataCatalogServiceImpl.java
@@ -167,9 +167,12 @@ public class GcubeCkanDataCatalogServiceImpl extends RemoteServiceServlet implem
 
 		// retrieve the list of VREs to whom the user belongs (actually one vre at most is sent)
 		Map<String, String> roleForVre = UserUtil.getVreRoleForUser(
-				SessionUtil.getCurrentUser(getThreadLocalRequest()).getEmail(),
-				scopePerCurrentUrl,
-				getCatalogue(scopePerCurrentUrl), isViewPerVREEnabled() != null);
+				SessionUtil.getCurrentUser(
+						getThreadLocalRequest()).getEmail(),
+						scopePerCurrentUrl,
+						getCatalogue(scopePerCurrentUrl), 
+						isViewPerVREEnabled() != null, 
+						getThreadLocalRequest().getSession());
 		ckan.addListOfVREs(roleForVre);
 
 		return ckan;
diff --git a/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/server/UserUtil.java b/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/server/UserUtil.java
index b614388..e98a587 100644
--- a/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/server/UserUtil.java
+++ b/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/server/UserUtil.java
@@ -7,6 +7,8 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
+import javax.servlet.http.HttpSession;
+
 import org.gcube.datacatalogue.ckanutillibrary.server.DataCatalogue;
 import org.gcube.datacatalogue.ckanutillibrary.shared.RolesCkanGroupOrOrg;
 import org.gcube.portlets.gcubeckan.gcubeckandatacatalog.server.thread.AddUserToOrganizationThread;
@@ -42,14 +44,18 @@ public class UserUtil {
 	//private static Logger logger = LoggerFactory.getLogger(UserUtil.class);
 	private static final Log logger = LogFactoryUtil.getLog(UserUtil.class);
 
+	private static final String ADD_USER_TO_OTHER_ORG_KEY = "ADD_USER_TO_OTHER_ORG_KEY";
+
 	/**
 	 * Gets the list vre for user and the role the user has in them.
 	 * retrieve the groups to whom a given user belongs (given the user EMail)
 	 * @param userEMail the user e mail
+	 * @param httpSession 
 	 * @param pathVre 
 	 * @return the list vre for user
 	 */
-	public static Map<String, String> getVreRoleForUser(String userEMail, String context, DataCatalogue instance, boolean isViewPerVREEnabled){
+	public static Map<String, String> getVreRoleForUser(String userEMail, String context, DataCatalogue instance, boolean isViewPerVREEnabled, 
+			HttpSession httpSession){
 
 		GroupManager groupManager = new LiferayGroupManager();
 		UserManager userManager = new LiferayUserManager();
@@ -58,29 +64,34 @@ public class UserUtil {
 		GCubeUser user;
 		try {
 			user = userManager.getUserByEmail(userEMail);
-	
+
 			// filter according the current context: if it is a VO/VRE, we send all the VRES under the VO. If it is the root vo, we send all user's vres.
 			long groupIdContext = groupManager.getGroupIdFromInfrastructureScope(context);
 			GCubeGroup currentVRE = groupManager.getGroup(groupIdContext);
 			String localRoleInThisVre = RolesCkanGroupOrOrg.convertToCkanCapacity(getLiferayHighestRoleInOrg(roleManager.listRolesByUserAndGroup(user.getUserId(), currentVRE.getGroupId())));
-			
+
 			// ckan-connector will do it
 			mapRoleByGroupSingleVre.put(currentVRE.getGroupName().toLowerCase(), 
 					localRoleInThisVre);
-			
+
 			// perform further checks
 			if(!isViewPerVREEnabled){
-				List<GCubeGroup> listOfGroups = groupManager.listGroupsByUser(user.getUserId());
-				new AddUserToOrganizationThread(
-						instance, 
-						user, 
-						listOfGroups,
-						isViewPerVREEnabled,
-						groupIdContext,
-						roleManager,
-						groupManager,
-						localRoleInThisVre).
-						start();
+				String keyPerScope = context + ADD_USER_TO_OTHER_ORG_KEY;
+				Boolean alreadyAdded = (Boolean)httpSession.getAttribute(keyPerScope);
+
+				if(alreadyAdded == null || !alreadyAdded){
+					new AddUserToOrganizationThread(
+							instance, 
+							user, 
+							groupManager.listGroupsByUser(user.getUserId()),
+							isViewPerVREEnabled,
+							groupIdContext,
+							roleManager,
+							groupManager,
+							localRoleInThisVre).
+							start();
+					httpSession.setAttribute(keyPerScope, true);
+				}
 			}
 			logger.debug("Returning Map to the ckan connector : " + mapRoleByGroupSingleVre);
 			return mapRoleByGroupSingleVre;