I make a Backup Bi-Weekly (every second week) Or, If I happen to have done lots of work over one week, then I do a backup before the bi-weekly period is up.
What to do with the backups? Find a friend and exchange CD's with him, you keep his, he keeps yours. Oh, and once a month, make a double backup and keep one and exchange the other.
Before you ask,.. no you can't have my SE5 work Backup CD's they go to Aaron
Cheers!
