As I told you yesterday, "Given the history of Titan 4B boosters, the repeated rescheduling of this mission and that the system is due to be phased out, I'd suspect the Americans are dealing with some mechanical issues."
As VOCM is reporting: "Meantime, the U.S. Air Force Space Command at Cape Canaveral says the launch was postponed because of mechanical problems with ground support equipment."
Go the US Air Force Space Command webpage and you'll see the schedule for launches at Canaveral. NROL-16 is still listed but with the launch date being "no earlier than 11 April 05".
In other coverage, the Canadian Press story is running in various forms in all the major newspapers. The Post is checking to see if Jean Brault mentioned anything about it in his explosive testimony before committing to coverage. Explosive testimony. Explosive missile. Do the math.
CBC's national has a script story and a video story [<--requires Real Player] by our own Chris O'Neill-Yates. (Psst Chris: the launch video you used is a submarine launched missile not a Titan)