From 8am this morning, O2's web site started accepting iPhone 3G pre-orders. Around an hour later, the site crashed due to heavy volume. At around 11.30am, the web site reappeared, claiming that the 16GB iPhone 3G was already unavailable. At a similar time, The Carphone Warehouse's web site started taking pre-orders, but their shopping cart refused to accept 16GB iPhone 3G orders, placing the 8GB model into the basket instead. About half-an-hour later, pre-ordering was removed, and only came back online at about 11.30am...