There's blame that can go towards the special teams (WR Randall Cobb fumble) and the defense on the first two long drivers by the Panthers.
But the big difference in this game is that Aaron Rodgers and Greg Jennings just aren't in sync. Rodgers has thrown the ball to Jennings six times, and they've only got one completion. On the Packers last possession, the last four passes went to Jennings, only one was relatively easy, but all four were incomplete. They were all passes that those two have completed in the past. If there's one chance I'm looking for (except the benching of CB Jarrett Bush, which will never happen due to unknown reasons) it's the connection between Rodgers and Jennings.