I have a APC UPS 500. I got this two months back and already I have had to get it replaced twice. Heres what happened. The place I stay in nearby is a transformer. On both occassions the transformer burst and my comp just shut down. And on both occasions after the electricity was back and I started off the UPS it started burning inside !!! I have no idea as to why!!! I thought UPS's were there to protect the comp from precisely these sort of situations! Any ideas whats happenin guys ? And when I say burnt one side of the pastic melted and I could see flames inside !!!!!