As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLIGHT 2811, THE CREW REPORTED A LAV SMOKE INDICATION AFTER TAKEOFF. THE AIRCRAFT RETURNED TO DFW WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE AIRCRAFT AND PLACED THE APU ON MEL 49-00-00 CTL 117353, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. THE AIRCRAFT CAME TO IAH ON 03/09/07 WHERE MAINTENANCE REMOVED AND REPLACED THE APU, OPERATIONALLY CHECKED WITH NO DEFECTS, REMOVED MEL, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.