We backed up the entire WP Core Database and Upgraded to the newest version. If you experience any issues please let us know. So far testing hasn’t show any bugs in this upgrade process.

These updates appear to be bug fixes only, which typically will not show any signs of changes to most of the users. If you feel you are experiencing a change due to an update, please indicate this by commenting on this page and we will check the change-log of files to see if the changes could be the source of your problem.

EDIT:
I found out today that WordPress identified the security threat they patched.

Yesterday a vulnerability was discovered: a specially crafted URL could be requested that would allow an attacker to bypass a security check to verify a user requested a password reset. As a result, the first account without a key in the database (usually the admin account) would have its password reset and a new password would be emailed to the account owner. This doesn’t allow remote access, but it is very annoying.

We fixed this problem last night and have been testing the fixes and looking for other problems since then. Version 2.8.4 which fixes all known problems is now available for download and is highly recommended for all users of WordPress.