How often do you reformat your computer?

[Eminem]

How often do you reformat your computer?

Mostly people do it every 6 months or so. However, I have also seen people who do it once every two months. I have reformatted my computer around two times now...once because my windows had an "error" and wouldn't agree to load and other time was because I felt it needed to be reformatted

So my basic range would be around 7 months or below. Nothing above that. If you do reformat your computer...how do you backup your stuff? Do you write it on a Cd? Transfer it to your other computer...take some of it on a USB drive? What do you do?

Please post your thoughts

Thank you.