PC Pro (UK Magazine/Site) did a remake of the iPhone 3G ad that touts the speed of the new iPhone. What was done in a 30 second spot, took more than 2 minutes and 20 seconds on a WiFi connection.
The Advertising Standards Authority claimed that the original ad was too misleading and had Apple pull the ad.
The side by side comparison can be found here
Is the iPhone really that slow? Does it really fail to respond to zoom requests that much? Just wondering - I've not used anything more than a Touch at the iphone store and don't remember that much sluggishness.