Has anyone else seen a problem recently with 'phantom' Virgin Atlantic Space?

For example, searching 2 tickets LHR-JFK June 7th 2014.

VS9 and VS25 both return available during the search; but you get the "We're sorry. One or more of the flights you selected just sold out. Please search again to view and select alternate flights." message when you try to click through.

I tried calling, and I get varying reports from the agents on what they can see for those flights; but it's never the 2 seats reported by the search tool.