I saw that last night and nearly fainted but then all night it would just let you type the amount and take you to a blank screen! Thankfully the problem resolved itself and today it appeared so I've sent over a test amount to buy 2 BTC and just waiting for it to appear in my wallet.

I sent the PingIt to BlockChain.Info at 5:37am and it's now 6:50 so almost an hour and a half. I will try and update with the full details of exactly how long it took and how much BTC for GBP was received.