This from today's Sporting News on the Broncos. I'd do a link instead but I don't think it would work:

The coaches say they are pleased with the progress of the defense. The unit had plenty of question marks coming into the preseason, especially with a switch to a 3-4 scheme. Not every issue has been resolved, but Denver is tied for fourth in the NFL in total defense in the preseason, allowing only 263 yards per game. . . . While there are still some mistakes with assignments, the players have taken to coordinator Mike Nolan's aggressive approach. They're pressuring the quarterback, recording seven sacks in two games, and giving up 3.9 yards per carry. . . .

That's hardly a guarantee of success in the regular season, but it's more encouraging than doing badly. They also mention that the defense is doing this without Dawkins, and that he'll be ready for the opener.