Add this functions in your functions.php in your template directory, to adjust the menue order of groups and profiles

menue order of groups and profiles

// Change the Profile nav tab order 
function change_profile_tab_order() {
	global $bp;
 
	$order = ''; // Add the component slugs coma separated in the order you like to have the nav menu tabs

	$order = str_replace(' ','',$order); 
	$order = explode(",", $order);
	$i = 1;
	foreach($order as $item) {
		$bp->bp_nav[$item]['position'] = $i;
		$i ++;
	}
}
add_action( 'wp', 'change_profile_tab_order', 999 );

// Change the Group nav tab order
function change_groups_tab_order() {
	global $bp;
 
	$order = ''; // Add the component slugs coma separated in the order you like to have the nav menu tabs

	$order = str_replace(' ','',$order); 
	$order = explode(",", $order);
	$i = 1;
	foreach($order as $item) {
		$bp->bp_options_nav['groups'][$item]['position'] = $i;
		$i ++;
	}
}
add_action('wp', 'change_groups_tab_order');

Hi Sven, This is fantastic. do you have any idea how you would change the "active" profile menu item from "activity" to "profile?