Terrible? Perhaps. But Green Bay didn't suck as bad as the Vikes did against the Bucs (Packers actually scored an offensive touchdown). Green Bay is losing but they are competing and have had opportunities to win every game this season.
This is the same slow start as last season that Green Bay had. The difference is the Vikings aren't having the fast start. This may not bode well for the Vikings as the season progresses and the pressure starts to build on the Viking coaching staff.
Green Bay's defense actually looks respectable thus far this year.