The 2011 Packers lost in the first round of the playoffs.
The 2010 Packers D held opponents to 16, 21, 14, & 25 points through the playoffs. And although the running stats weren't gaudy, the run game was effective throughout the playoffs. I'm not interested in the number of yds given up by a defense, especially during the regular season - points allowed during the playoffs is a much better indicator, particularly for this discussion.