It's been over a month since the Packers had to bounce back from a loss but it's something they do quite well.  Green Bay hasn't lost back to back games since December of 2010, and that's when Aaron Rodgers was an observer in Detroit and New England with a very bad headache.  Both of those losses you'll recall were tight games, this week the charge is to recover from a humbling 38-10 rout at the hands of the New York Giants.  Judging from the locker room after today's practice, the team is back to all business.  Especially the grumpy old men in the offensive line corner of the room.  Nearly all of them declined to talk to reporters after the whipping they took at the hands of the Giants front four Sunday night.  That's probably a good thing with another pass rushing demon in Jared Allen awaiting this Sunday afternoon at Lambeau.  The Packers have given up 37 sacks on the season, one more than all of last year and Rodgers is the most sacked starter in the league after 11 games.  Mike McCarthy isn't planning any changes however.  When Bryan Bulaga went down with his season ending hip injury (he was spotted today still on crutches), the Packers moved T.J. Lang to tackle and inserted Evan Dietrich-Smith at Lang's guard spot.  There's some conjecture the Pack weakened themselves at two positions but McCarthy said they'll line up with the same five again this week and ride this thing out.  McCarthy said Clay Matthews is a stretch again this week, even though he practiced on a limited basis working through a nasty hamstring pull.  C.J. Wilson isn't likely to go either with a knee injury suffered in New York.  That could further weaken a run stopping unit that must find a way to stop the NFL's rushing leader, the Bionic Viking, Adrian Peterson.  A remarkable 1236 yards on a knee that was completely rebuilt still less than one calendar year ago.  Cedric Benson was undergoing another medical examination after practice and there are whispers his Lisfranc injury is not healing well enough for him to make a return this season but nothing official from Lombardi Avenue on that yet.  Greg Jennings was a full participant in practice for the first time in, seems like this entire year.  He'll return to the field for the first time since the New Orleans game September 30.  And finally, Derrick Sherrod was placed on injured reserve, as expected.  Coming back from a nasty broken leg suffered during his rookie season, Sherrod had been on the PUP list and practicing for a couple of weeks but it became clear he's nowhere near ready to help the team, hopefully in 2013.