I had parked my 93 civic for 11 days while out of town. When I tried to backup, the car would not go, as if there was a tire chock or swomething, I got out and pushed the car forward and backwards and heard a metallick clunking noise, then the car moved fine but I am also hearing something funny like metal rubbing on metal when I use the brakes. I suspect the rear brakes froze and then a shoe fell off place when I pushed the car. Anyone had this happened before? I will take a look tomorrow, probably will have to replace the shoes if not the parking brake line.