My Setup: Rasp. Pi with Raspbmc, 1TB external HDD, TP-Link WLAN dongle, USB IR-remote, USB Hub (own powersource)
Everthing works fine when directly plugged into the pi. But neither the HDD nor the dongle are working when plugged into the hub. (note: The remote always works and is plugged into the hub. Lights are on (dongle and hdd))
I'm not sure if it is configuration error or a problem with power supply or ??? Any advice apreaciated!