Today I got a HW-C450 Soundbar for my LE40B550 LCD TV. The TV is plugged in to the Optical 1 input of the bar. No other devices are connected. I enabled the Auto Power feature of the soundbar. It turns on when the TV is turned on, but it doesnt switch off when i power down the TV. After a huge delay it finally turns off, but from the manual I understand this as power-saving... I would like to have the bar powered off simultaneouisly with the TV. The TV is set to "external speakers"