I was unable to login to stackoverflow.com with my usual set of credentials, and the password recovery mechanism stated that my email didn't have an associated account. I found this odd, but decided to simply create a new stackexchange account and start posting again from there until I could find out what was wrong with my original account.
To my surprise when I tried to edit and then save my new account I got the following error at the bottom of the page:
Oops! There was a problem updating your profile: temporary error updating your profile -- please try again! This email address is already registered. If it belongs to you, visit our <a href="/users/account-recovery">account recovery</a> page to get access to this account.
What's going on here? Has anyone else run into this?