Welcome to Law.com Class Actions: Critical Mass, a weekly briefing for class action and mass tort attorneys.

This week: A magistrate judge entered a plea of not guilty on behalf of Tom Girardi, who now earns $3,000 a month in Social Security income. A federal judge prepared to sign off on Facebook’s $725 million privacy settlement instead paused his approval after New Mexico’s attorney general stepped in. A judge in the hair relaxer lawsuits appointed 35 lawyers to one of the most diverse plaintiffs’ leadership teams in multidistrict litigation.