Posted by ESPN.com's Kevin Seifert
Let's get caught up on a busy Monday of personnel moves in the NFC North:
Chicago: Defensive tackle Dusty Dvoracek will miss the rest of the season because of an arm injury, Bears coach Lovie Smith told reporters Monday afternoon. Dvoracek made it through 12 games this season after foot and knee injuries limited him to one game in his first two NFL seasons. It's likely the Bears will use veteran Anthony Adams and rookie Marcus Harrison to replace him.
Detroit: The Lions signed free agent receiver Keary Colbert and placed veteran Mike Furrey (concussion) on injured reserve. Furrey has tried several times to resume practicing since originally suffering the injury but has been experiencing dizziness. ... Coach Rod Marinelli said the status of backup quarterbacks Drew Stanton (concussion) and Dan Orlovsky (hand) is uncertain but that Daunte Culpepper will remain the starter.
Green Bay: The Packers announced the release of punter Derrick Frost, whose inconsistency had become a maddening topic for fans, but did not immediately indicate who will replace him. Coach Mike McCarthy did say that backup quarterback Matt Flynn will become the holder for placekicker Mason Crosby, suggesting the Packers aren't searching for a permanent replacement at punter. ... The Packers also lost special teams contributor Kenny Pettway (knee) for the season and promoted two members of their practice squad, defensive tackle Alfred Malone and cornerback Joe Porter.