SW QA at Apple is getting worse and worse. something we are sort of calling '10.7.5.1' or whatever. So instead of being forthright about this and saying 'we really screwed up here', and calling 10.7.5 dead in the water, and releasing a point update to 10.7.6 (which is the RIGHT way to handle SW CM), instead we are copping out and releasing.

(However if you called us and got a level-2 tech on the phone, they would admit to you off-the-record that Apple was aware of this problem). However we didn't have the integrity to admit it even though there were tons of discussions about this all over the web and on our own discussion boards. Well, we screwed up big time with the 10.7.5 update, and we have known about this for a few weeks.

This is what this really means (from Apple).