We've now heard this from multiple developers, so it's clear that something's a bit out of whack in the App Store approval process for applications that use in-app purchasing.
As a matter of policy, Apple requires developers to test in-app purchases (IAP) with a test user account before the application in question can be approved. Unfortunately, this test account has been offline for a week now with no word as to why. If you are a developer, you can see the relevant thread on Apple's own developer forums here.
Could it be that approvals are being quietly suspended while Apple's lawyers investigate the Lodsys patent claim, which directly relates to in-app purchas