If you're looking to be happy about something, consider that the D is thus far the best in recent memory as far as ppg allowed, which is the only stat on defense I care about. Yes it will probably go up with OU and KU coming up, but still impressive considering we don't give these guys much of a rest during the game through substitution. The powerful WCO had its best year last year, producing just over 35 points/game. These stats don't include the bowl games.
On a side note, do you think our D line is going to start some signs of fatigue toward the end of the season? They looked tired to me in the fourth against ISU.