This is much more in line with most of the other polls in North Carolina; there was the other poll which showed Obama behind Romney and Perry by a decent margin.
Although I also think these North Carolina polls are being overly generous to Obama. The national mood is much more antagonistic than last time and the President barely pulled off a victory, and that was even with Palin dragging down John McCain
Ah yes, but North Carolina is trending Democratic, so these two effects seem to cancel out. Generally, PPP has been very accurate.