In App Purchase request results in password prompt
<p>With In App purchase on IOS 4 when performing a product request or SKPaymentQueue addTransactionObserver this results in the password prompt being shown. This occurs using a test user account. Why would this happen? </p>

<pre><code> productsRequest= [[SKProductsRequest alloc] initWithProductIdentifiers:productIdentifiers];
 productsRequest.delegate = self;

[productsRequest start];
</code></pre>
