Another helicopter down?

I think it was just yesterday that the military said there was no indication that the recent helicopter downings in Iraq were due to a change in enemy tactics or capabilities -- just a random occurrance. Hmmmmm. Today there are as yet unconfirmed reports of another downing:

BAGHDAD (Reuters) - The U.S. military said it had no information of an American military helicopter crashing north of Baghdad on Sunday after residents reported one went down under fire.

"We have no reports of a U.S. military helicopter being down," U.S. military spokeswoman Lieutenant-Colonel Josslyn Aberle said.