UPDATE: AT&T denies it has activation problems. A spokesperson just sent us the following statement:
We had our most successful iPhone launch with more than 200,000 preorders placed in the first 12 hours last week. As customers are receiving their devices – and more are buying in our stores – we’re seeing completed activations across our servers and are moving requests through as quickly as possible. We’re not seeing any widespread delays at this time, though customers may experience minor wait times as more devices are activated.
AT&T’s activation servers have melted down, according to a tip we just got from an Apple store employee.