MD07 I am SO glad to see this application updated for Leopard. There are a lot of really great backup solutions out right now and it can be tricky finding the perfect one for your needs.
Deja Vu has never let me down. I use it regularly to backup to an AFP share and I really like how it doesn't hide anything or do any kind of sub-folder witchcraft with my files. I tried Time Machine, Synk, Superduper, Carbon Copy Cloner, and Crashplan, and I just like the way Deja Vu works better than the rest.
The only reason I would give this a 4 instead of a 5 for features is because I don't think there is a way to make a bootable backup. This isn't too much of a problem for me since a lot of the software I use needs to be re-installed or re-authorized even with a bootable backup anyway. You can make a bootable clone of your drive with Disk Utility anyway.
(Version 3.4)