The things I'd fault PhotoSave on are no support for OS X (what a strange omission) or Linux, no incremental backup, and no file recovery service (you have to go to the disks and find the files you want to recover).

Another issue is PhotoSave's ugly behavior when you cancel an operation. For example, if you cancel a backup you get spurious warnings about missing files, or PhotoSave carries on and creates a backup of the files found up to the moment you cancelled, which wastes a session. Gentlemen of Verbatim, "Cancel" means stop what you're doing, not go ahead with whatever you've got even if it's not what I want.

All that not withstanding, this is an interesting idea for your users who need to do backups where you aren't, for whatever reason, in a position to manage it for them -- for example, field workers using digital cameras and working with images on laptops. As these discs are write-only there's a good chance your users won't wipe out their backups.

A nice idea and definitely useful, but limited and a little unpolished. I'll give PhotoSave 3 out of 5. A three pack of PhotoSave disks costs US$9.99.

Finally, a follow up from reader Glen Klitz who came across my about the mysterious surge in deferred procedure calls that my Windows XP system experienced. Glen is seeing exactly the same problem on a white box with a 1.53GHz Athelon XP1800 with 608MB of RAM running Windows XP SP3 OEM (I had a 1.8GHz Pentium with 1GB of RAM running Windows XP Professional SP2).