vinay sir, i dont remember the punctuality of the train on arrival at MFP. but there was a thick layer of dust on side upper and upper berths in SL classes. a layer so thick can only settle in 10 hours idling. not to mention the worst casualty were next-gen Bio Toilets, which were rendered unusable due to visible blockages create by foreign objects thrown into it.
i too hope this was one off incidence, and would see a clean 12491 next time.