diff -ruN moodle/lib/accesslib.php public_html/lib/accesslib.php
--- moodle/lib/accesslib.php	2007-04-18 10:09:59.000000000 +0100
+++ public_html/lib/accesslib.php	2007-04-19 22:33:31.000000000 +0100
@@ -2265,6 +2265,9 @@
                             sync_metacourse($parent->parent_course);
                         }
                     }
+
+                    //Delete lastaccess records when unenrolled from course
+                    delete_records('user_lastaccess', 'userid', $ra->userid, 'courseid', $context->instanceid);
                 }
             }
         }