1) Did the Bush administration fumble the ball with intelligence regarding the possibility of an attack before 9-11?

YES.

2) WHY was the bin Laden family allowed to leave the USA (17 people was it?) so shortly after 9-11, especially when the Bush administration knew that Osama was their enemy and likely behind the 9-11 attacks?

I do think that they should not have been allowed to leave so quickly and the check on their status and connection might not have been thorough enough.   This is another example of sloppy work, but not an example that there was a consipiracy. What is the connection? These flights were not very well kept secrets and I would assume they would have covered tracks, especially with a few days to regroup.

3) The memo that crossed Blair's desk with regard to the Iraq invasion seems to have been forgotten by everyone. Why is that?

That was a snow job. The war was wrong, and I think Bush took advantage of 9/11 to persue his goals.    Conspiracy? No proof or suggestion of it here, but it does show an opportunist at work.

5) In the space of just a few years, the USA had irreparable damage done to its world image and damage dones to its personal freedoms as outlined by the Constitution. Why have Americans become complacent about that? Because the full weight of what are now legal restrictions haven't been applied to the general population yet?

Americans are still complaining and working to reverse this mess. Too many people sit on their ass until it directly concerns them. There should be more people complaining.

6) Yes, the conspiracy people (of whom I am one) cherry pick. But then, so do those of you who claim there is no conspiracy.

Keep picking and it will never heal. Seriously, you can cherry pick - but so far you have not made anything stick.   It is ill conceived.