Prehaps a bit of a stupid question but for all those who use or have used CCleaner, when it cleans the registry for you it asks if you want too make a backup.
If you make a backup and save it how do you know when it's safe to delete the backup or don't you delete the backup do you just keep it saved.
If you make a backup and save it how do you know when it's safe to delete the backup or don't you delete the backup do you just keep it saved.