Invalid response received from device

Hello everyone. "iTunes cannot connect to the iPhone because an invalid response was received from the device." I get this message each time I connect my ipod touch to my computer. I have tried reinstalling itunes, uninstalling apple mobile support and all apple related programs and installing them again. However, I would still get the same result. Anyone can help please? Thanks in advance.(My ipod is 3rd gen 32gb 3.1.3)

Message was edited by: leganda