Poor Apple. The company just can't catch a break these days. On Wednesday, Apple Japan began offering customers iPod nano replacements, giving in to local government demands to better address an overheating battery issue affecting Apple's first generation iPod nano players. Then Friday morning (making the English-language press only now) a busy rush-hour commuter train was stopped in Tokyo to investigate a smell. According to a spokesman, "When a member of staff went to investigate inside the train, a passenger came over showing him that the iPod she was listening to had burst apart." No injuries were reported and the exact iPod mod