Matt Cutts recently announced that July PR toolbar update, but he also said "Matt added "I’m expecting that also in the next few days that we’ll be expiring some older penalties on websites." Has anyone experienced an expiring penalty? I have a site under a -50 penalty that enjoyed a PR boost from PR3 to PR4, but I received no relief from the penalty. I did, however, witness a competitor's site go from the 70s for a long-tail search phrase into the 20s about a day or two within the update.