We, Bangladeshi are having a bad time (Load shedding). We face blackout several times a day (5-6 times generally). I don't have a UPS and most of time my pc is turned of uncleanly. I've noticed that if firefox is open during the interruption, next time I open it every page (which I already visited several times) loads every image / css / javascript etc completely from the server making the loading process very slow. Does it clear the cache automatically? How to resolve this?