Restrospect

It would with the configuration I described. Have you thought about SilverKeeper: http://www.lacie.com/products/product.htm?pid=10097 You could get an external hard drive as your backup and it would feed both computers the latest data.

Sadly you will need a server will roaming accounts for what you are exactly want. The closet Sync files that act like Apple's .Mac is BusySync. Also you get something like Time Capsule or get something like a Drobo with a Dobo Share and an Airport Extreme. Then share files with this kind of setup.

Retrospect wouldn't keep the two laptops with identical files. I need to be able to use either interchangeably. The air's sadly all run Leopard, which I'm not impressed by. I have paid for the upgrade to my other laptop and can make it if I have to. Joanna

Have you thought about getting a server so neither laptop has to manage all that data? You just use retrospect to back everything up; it compares all worked on files to the server files and copies over only what's changed.

When it comes to backups, you should have at least one backup stored locally and one stored remotely. The local backup gives you the ability to quickly restore or recover lost files, while the remote backup provides a secondary back to your primary, giving you comfort in knowing in the event that your local machine and backup are stolen or destroyed by water, fire or natural...

Not sure when (before my last backup to an external drive), my iPhoto library has had recent photos erased. The directories since July last year are just missing (and, presumably, the Album Data.xml file has been altered accordingly). Since I ran the backup (Retrospect Express), I hold little hope of getting them back, but I'd like to prevent this happening. I've also lost...

Yes I have Retrospect installed. I was able to find and use 'Script Editor' which was already installed. ...

Do you have Retrospect installed? ...

This is a file that is meant to be edited with a text editor for EMC Retrospect Backup Software. I do not believe that it is a .bin. The icon shows it as a script, which it is. ...

I have a Retrospect backup program running so I can go back and restore the lost mails. ...