duplicate detection - not working?

[Jack <ostroffjh sbcglobal net>]

Good afternoon,

Rather than go through a long story of why, I'll just ask if there is a  
quick explanation of how f-spot does its duplicate detection on  
import.  I just imported a bunch of pics, some of which had been  
renamed with no other changes, and they were not detected as  
duplicates, as I had expected.  I spot checked a few, and the files  
were identical except for name.

Thanks for any explanations.

Jack