Index: bp-activity/bp-activity-templatetags.php
===================================================================
--- bp-activity/bp-activity-templatetags.php	(revision 2619)
+++ bp-activity/bp-activity-templatetags.php	(working copy)
@@ -489,7 +489,7 @@
 	$meta = ' &middot; <a href="' . bp_activity_get_permalink( $activities_template->activity->id, $activities_template->activity ) . '" class="view" title="' . __( 'View Thread / Permalink', 'buddypress' ) . '">' . __( 'View', 'buddypress' ) . '</a>';
 
 	/* Add the delete link if the user has permission on this item */
-	if ( ( $activities_template->activity->user_id == $bp->loggedin_user->id ) || $bp->is_item_admin || is_site_admin() )
+	if ( $bp->loggedin_user->id != 0 && (( $activities_template->activity->user_id == $bp->loggedin_user->id ) || $bp->is_item_admin || is_site_admin() ))
 		 $meta .= ' &middot; ' . bp_get_activity_delete_link();
 
 	$content[1] = $meta . '</span>' . $content[1];