Originally posted by SpearMint
Are you sure? It might just be the download indicator misleading you. Have you tried loading a video until it seems partially loaded, disconnecting from the Internet and playing the video? It's nothing to do with your browser settings, and I don't think it would be anything to do with your connection.
Originally posted by ErroneousDylan
How is your internet connection set-up? Wireless/cable, DSL/Cable?