I think you are suggesting a non-causal solution. What exactly is this "it" you think I should have tired on my wife's computer? The character never appears in my normal mac usage. So despite the fact that I use her computer all the time, I never noticed it happening (though I'm sure it did) from her computer.
At the time, all you had to go on was that there was a probable misconfiguration somewhere in the deep, dark innards of MacOS, and the best way to handle that particular problem is to nuke it from orbit.