In fact, as Cult of Mac and The Next Web summarize, traffic to Apple was so high that broader Internet infrastructure was even experiencing difficulties under the load. In particular, one Internet exchange point in London saw its traffic jump by 50% as iOS 5 became available.

The traffic at the LONAP (LONAP is a London Neutral Internet Exchange Point where Internet and content providers exchange traffic) increased from a normal peak of around 18Gb/s to around 28Gb/s.
Quelle: http://www.macrumors.com/2011/10/13/...tartup-issues/