So strange.
I am using a few SE network sites, all with the same login details, and the accounts are connected. When I come into SE and try to login, it does not find my credencials, and offers I make a new OpenID.

What is even more strange is when I came into meta right now to post this - my profile was loaded.

EDIT more details as per request:

first visit to StackExchange.com looks fresh [doesnt take my login from network]

i click google which is how i do on the whole network

..go to google, provide creds... redirected back to SE to see :

bummer. Not confirming - i click the META link on the top instead and come to this: