When post beta becomes pre alpha

No, I'm not referring to my writing this time.
Blogger, that's the place where my and many other blogs are to be found, declared their beta version as stable only a few days ago. I had a few issues with the beta originally, but after that things have been smooth.

Switching from beta to stable had numerous blogs moving from the old stable to the new, which pretty much was the beta. I noticed an immediate hit on performance, but that was expected.

Since a few hours numerous blogs are simply gone. Error messages the only proof a blog used to be found there. That was not expected.

We'll see if mine also becomes one of the faulty blogs or not.