In time of war, information is often unreliable (as we learned by getting all steamed up about that Marine amphibious invasion in Desert Storm, which never happened). It may be that the media is also being led on a wild goose chase.
However, I expect the administration to do whatever it takes to win this war, including denying or granting access to the media. President Bush's primary responsibility is the defense of the nation; if you look at things from that perspective you won't be alarmed.
You didn't get a call from someone at the Pentagon, did you?
That was exactly my point -- IF this movement by the media is a sign that war is imminent, then they are clearly privy to some information that is not readily available to John Q. Citizen.