Just saw this pop up when (finally managing to access my account after much crashing and cursing).

Avios calculator planned maintenance

We'll be carrying out work on our calculator from 05:30BST. You'll still be able to collect Avios and Tier Points when you book, but you won't see the amount you've collected until we've finished this work. Thank you for your patience.

Just wondered what wonderful enhancements we will see, given the changes soon coming to how Avios will be calculated.