Yep, always two files: one name, one name + bu (for backup). It has saved me a lot of grief. I learned the hard way, too. :^)

This is not my "second childhood". I'm not finished with the first one yet.

Time flies like an arrow; fruit flies like a banana.

"I'd like to die peacefully in my sleep like my grandfather....not screaming in terror like the passengers on his bus." - Jack Handy