I think Ken Starr settled for the one certain thing because there was evidence that had not been shredded and memories that had not been erased. (taped conversations and an unmistakable DNA deposit) You can bet Ken Starr would have gone nowhere with that one if all he had to rely on was Monica Lewinsky's testimony. Deny, deny, deny. It's hard to convict someone when all the witnesses sing the same tune. Or die.
Unfortunately, "settled" is the word... and because it was 24/7 for almost 2 years and ended up being a tawdry little affair, it was branded as a political witchhunt. And because the charges were about "perjury and obstruction" over the investigation, not any underlying crime itself, it set the precedent for prosecutors that "creating crime" in this fashion was a goal. Sen. Hutchinson bemoaned this (though she voted on the charges againt WJC anyway), but the precedent has been set.
Having said all that, WE STILL DON'T KNOW ANYTHING! The WH just needs to go about its business, and maybe Bush needs to be making some stronger statements about REAl issues - like immigration.