Same here. Just because the Bush administration spent a few hours tracking down leads in Iraq in the aftermath of 9/11 doesn't mean there's more "Saddam did 9/11" belief than "Elvis is alive" belief. Yes, in retrospect it was a stupid war and put a nail in the coffin of my belief that military action was the one thing our government had a hold on, but stop spouting the straw-man lie that Iraq was payback for 9/11.
For quite a while a majority of the US did believe Saddam was directly involved in 9/11 [0]. Although it's a minority opinion now, it's still a quite sizeable minority.
Anecdotally, I remember hearing such claims/speculation in the news frequently just after 9/11, before they moved on to other excuses.
What's the sample size for that survey? Howard Stern sent someone wandering through the streets of one of the poorest parts of New York, and found a bunch of idiots who either didn't know who the president was, or thought that Mitt Romney would win the election solely because he is an African American. That doesn't mean that everyone in New York is stupid. Any survey that supposes to represent a national opinion should involve at the very least, several million people.
I'm just a bit taken aback, because that's such a ridiculous and idiotic view to hold. It's almost as stupid as believing the holocaust didn't happen.
