The flippant answer is - nobody knows because nobody knows what your question was.
In the section Document Shredders - providing you put your question in that category there are, at the moment, 456 questions including this one. You could search through them all but it would take ages.
It may be that you accidently put your question in a different category - maybe it wasn't a document shredder question at all - nobody but you knows this.
It may be that a software bug has deleted your question or somebody entered an inappropriate answer and the site administrator deleted it.
It may be quicker and easier for you to put the question in again rather than search around for it.
Good luck...
Peccavi, January 2010