Reformatting your hard drive or even Archive & Install are radical measures intended to repair vexing problems. These are not intended to be standard practices for upgrades. Unfortunately, a lot of switchers think that necessary procedures for handling Windows are good ideas for handling Macs. They are not. If your computer is behaving well now, then you have about 99.999% certainty that it will behave well after a simple upgrade. The installer will go through a media and file system check as part of the upgrade. When it is done, you will be able to immediately get to work. Those performing more radical procedures will still be futzing with their systems long after you are done.When installing Leopard on your system, will you have to reformat your drive and lose everything?
mmmmmWe've had many threads and much discussion, but no actual polls that I can recall, and certainly no consensus in favor of clean installs.