I hate reading that statement in blogs. I'm inclined to respond with something snarky like, "You were not missed..."
[Lame excuse] Google wouldn't let me in with the old username (e-mail address) and password. Really. Seems they switched over to all Gmail/Google Accounts. This Blogger blog existed before Gmail.[/Lame Excuse]
If you can think of a better, or worse comeback than "You were not missed..." feel free to add to the comments. I sure it will be deserved.