Geektastic: I have never been to the Melbourne Cup (although I have been to the city).
Given that somewhere like London must have hundreds of thousands of calls and data demands every minute of the day on every cell site, and rarely if ever does one hear of this sort of issue there, it shows just how much more capacity they must have in say VFUK.
A comment like that infers you've clearly never spent much time in London. Vodafone 3G is horrible there, as is the 3G coverage and capacity from other carriers.
You're also completely failing to compare cities where infrastructure is used on a daily basis, and temporary infrastructure for a one day event. If the event organisers wanted to pay a few hundred thousand dollars for permanent infrastructure, or every mobile user at the location would happily pay a surchage for the day I'm sure things could be made a lot better.