There have been a number of login issues reported, primarily where people cannot login to their SPG accounts but can with their Marriott accounts. The root cause looks to be a number of us (including myself) used the same email address & password for both accounts and when they pulled the SPG data into the Marriott database we got a new number but the login information didn't come over in the import. Unfortunately those of us that this is impacting are going to be stuck with some orphan records for a little while until they can manually update the records.

For anyone checking in to a property tonight, or in the next few days, and can't login to your accounts to verify your reservation information, bring a paper copy of your email confirmation with (or something else official with it on it from your travel agency)