Index: src/bp-activity/classes/class-bp-activity-list-table.php
===================================================================
--- src/bp-activity/classes/class-bp-activity-list-table.php	(revision 10586)
+++ src/bp-activity/classes/class-bp-activity-list-table.php	(working copy)
@@ -593,12 +593,19 @@
 		 */
 		$actions = apply_filters( 'bp_activity_admin_comment_row_actions', array_filter( $actions ), $item );
 
-		/* translators: 2: activity admin ui date/time */
 		printf(
-			__( 'Submitted on <a href="%1$s">%2$s at %3$s</a>', 'buddypress' ),
-			bp_activity_get_permalink( $item['id'] ),
-			date_i18n( bp_get_option( 'date_format' ), strtotime( $item['date_recorded'] ) ),
-			get_date_from_gmt( $item['date_recorded'], bp_get_option( 'time_format' ) )
+			/* translators: %s: activity date and time */
+			__( 'Submitted on %s', 'buddypress' ),
+			sprintf(
+				'<a href="%1$s">%2$s</a>',
+				bp_activity_get_permalink( $item['id'] ),
+				sprintf(
+					/* translators: 1: activity date, 2: activity time */
+					__( '%1$s at %2$s', 'buddypress' ),
+					date_i18n( bp_get_option( 'date_format' ), strtotime( $item['date_recorded'] ) ),
+					get_date_from_gmt( $item['date_recorded'], bp_get_option( 'time_format' ) )
+				)
+			)
 		);
 
 		// End timestamp.