Kep55, Has to do with the length of the signal. Yes, they travel at the speed of light, but if I want to send 1 bit of information and the signal starts now, lasts for 1 second, then ends, the start of the signal may have reached you at the speed of light but you had to wait 1 second to get to the end of the signal. This of course ignores all other network factors such as the additional routers it would need to go through.