Just a couple of months ago it was starting to look like the inexorable passage of time was the greatest threat to the follow-on gender bias class actions filed against Wal-Mart in the wake of the U.S. Supreme Court's ruling in Wal-Mart v. Dukes. Judges in Tennessee and Dallas both threw out baby Dukes lawsuits pending in those states, agreeing with Wal-Mart and its lawyers…that the plaintiffs had run out of time to sue. On Friday the plaintiffs in a different regional Dukes spinoff managed to beat Wal-Mart on the time limits issue…U.S. District Judge Barbara Crabb…dismissed class allegations filed by a group of five female Wal-Mart workers, ruling that they couldn't show that their discrimination claims had enough in common to qualify for class treatment.