Ours was. And how. It would neither send nor receive email for hours. The horror.
Hitting all carriers, it turns out the BlackBerry outage afflicted enterprise users across the United States and Canada today. And the "company has no estimate for when service will be restored." Read more about it here. (Our service seems to be working fine as of 5 p.m., btw.)
You win, iPhone. You...you win.