What was found
EN ROUTE AT FL350, DOOR PAX AFT OPEN WARNING. RAN QRH AND CONTINUED FLIGHT WITH NO EVENTS. ALL PARAMETERS REMAINED NORMAL, MESSAGE EXTINGUISHED AT FL250. MAINTENANCE DEFERRED. ON 5/17/11 DEFERRAL WAS CLEARED - ADJUSTED L2 DOOR PROX SWITCHES IAW 52-72-21, OPS CHECK GOOD.