runs fine for graphing
I just graphed my drive in Panther, no problem.
Interestingly, I tried FileVault by installing on another user directory. I was running that user using Fast User Switching (but logged into my normal account), and Disk Warrior saw that user as a drive (which I was also able to graph, but not rebuild as it was in use). Interestingly, when I logged that user out, DW couldn't see the user anymore, so I guess there's a view of what FileVault is up to.
DW was also able to see, but not graph or rebuild, my iPod.
On Safari with a Panther, you find the most unexpected things!