Call of Duty 4: Modern Warfare just succeeded to basically stop the internet. It was caused by a really stupid move from Yahoo - they offered the demo exclusively on Yahoo Games with requirement of registration. The size of this installation file is 1.4 GB and Yahoo somehow underestimated demand for such a game and put the file on a single server, which resulted in the unbelievably slow download speed and hours of waiting for all gamers.
lmao.

Can't post original source btw.