I'll defer judgment if the government will defer judgment. When they're willing to say "I don't know", I'll be willing to wait until they figure it out. In the meantime, the more they spin me, the more I dis-believe it. I don't actually believe they're lying-- I just think the truth is that they don't freaking know and aren't willing to say so.
What are you basing that on? The government has not come out and declared a cause. They have said they don't know the cause, they have also discussed those things they do know. Seperate the two things.