diff -ur /usr/local/src/sakai_src/trunk/portal/portal-api/api/src/java/org/sakaiproject/portal/api/Portal.java portal/portal-api/api/src/java/org/sakaiproject/portal/api/Portal.java
--- /usr/local/src/sakai_src/trunk/portal/portal-api/api/src/java/org/sakaiproject/portal/api/Portal.java	2007-06-20 13:09:29.000000000 +0200
+++ portal/portal-api/api/src/java/org/sakaiproject/portal/api/Portal.java	2007-06-28 09:25:25.000000000 +0200
@@ -88,6 +88,11 @@
 	public static final String CONFIG_AUTO_RESET = "portal.experimental.auto.reset";
 
 	/**
+	 * Configuration option for default number of site tabs to display to users
+	 */
+	public static final String CONFIG_DEFAULT_TABS = "portal.default.tabs";
+	
+	/**
 	 * Names of tool config/registration attributes that control the rendering
 	 * of the tool's titlebar
 	 */
diff -ur /usr/local/src/sakai_src/trunk/portal/portal-impl/impl/src/java/org/sakaiproject/portal/charon/handlers/SiteHandler.java portal/portal-impl/impl/src/java/org/sakaiproject/portal/charon/handlers/SiteHandler.java
--- /usr/local/src/sakai_src/trunk/portal/portal-impl/impl/src/java/org/sakaiproject/portal/charon/handlers/SiteHandler.java	2007-06-20 13:05:46.000000000 +0200
+++ portal/portal-impl/impl/src/java/org/sakaiproject/portal/charon/handlers/SiteHandler.java	2007-06-28 09:23:48.000000000 +0200
@@ -346,7 +346,7 @@
 				myWorkspaceSiteId = siteHelper.getSiteEffectiveId(myWorkspaceSite);
 			}
 
-			int prefTabs = 4;
+			int prefTabs = ServerConfigurationService.getInt(Portal.CONFIG_DEFAULT_TABS, 5);
 			int tabsToDisplay = prefTabs;
 
 			// Get the list of sites in the right order,