Just got the email through, apparently they were hacked Friday morning August 12th. Here's the email:

Dear Bethesda Forum User,

We have identified a potential breach of our forum user database that occurred Friday morning, Aug 12. We have reset your forum password as a precaution, in the event that any encrypted forum user passwords were compromised.

When you next try to login to the forums, your old password will not work. Click the "I've forgotten my password link" underneath the login boxes, and follow the steps to setup a new password for your account.

We recommend you do not use your old password or a password you have used for other sites. Further, if your old forum password was used for any other online purposes, we recommend changing the password on those accounts as well.

If you have any concerns, visit the following link:
http://www.bethsoft.com/eng/contact_email.php

Seems like no-one is safe. So just a heads up if you use the same password on there as everything else. promoted forum item