Blogger.com Login Failures

We were recently helping a client bring their blog on-line using the Blogger service provided by Google (the same one that powers this blog). First we attempted to create an account, the error indicated that the account already existed. Upon questioning the client we discovered they already had Google account that was used for Google Analytics and a few other Google services we recommended. We then attempted to login to Blogger with the email and password used for Google Analytics. We were using the wrong password. The first pass through the error indicated invalid username or password, as expected. The second attempt to login (still with incorrect passw0rd) gave the error "The email you provided does not exist. " On the third attempt, same email and now with correct password our login was successful. Odd, seems like a little authentication glitch in their system. That error indicates our account doesn't exist! May just an issue with exception catching.