I apologize to everyone, I've been catching up on all your blogs but there were only a few I could comment on. I think I solved the mystery though, in case anyone else is having this problem.
Problem: You write a comment, ask to post as your google account and it makes you sign in and then brings you back and makes you sign in again, over and over.
Fix: When you go to sign in the first time, enter your login and password and then UN-check the remember me button.
I have no idea why this works but I just tried it and it does. Good luck and I'll be back soon with the full Euro-trip post!