I think there are multiple people aware of this, but I want to start a question for it to open a discussion and for admins to post relevant details.
I've noticed (and from reading comments here and elsewhere, others have too) that there is an intermittent failure which results in a database error page, or the standard StackOverflow error page. I'll try to screen cap it next time it happens.
I'd assume admins likely already know about this from error logs and server messages. Just wondering what's going on here.
EDIT: So, looking at both the screenshots, it looks like there's really only one error in the back-end. The other screenshot just says that it failed to properly display the error message.