Weird FS behavior tru FTP on CD9660

[Sdävtaker]

Hey,
I found a weird situation today,
I mounted a DVD with the mount_cd9660 and accessed it through
"filezilla". I got 2 times every file in the list, go back to the
original Pc and checked with "ls" and they appear only once. :-/
Im using last version Filezilla in MSW, and ftpd in FBSD7.0r.
I think it can be reading both TOCs in the DVD, but it is weird since
it doesnt happen when doing ls.
Can someone try reproduce it in another setup?
Sdav