[rdiff-backup-users] setuid setgid increment files

[Andrew K Bressen]

Hi--

I noticed that some, but not all, 
of the "increments" directories under my various rdiff-data directories, 
and some, but not all, 
of the increments.<date>.dir files inside them, were setuid or setgid. 

Do they need to be? 
Is there a way to make them not be? 

I'm running 0.10.2 on debian linux 2.4.x. 

  --thanks for any clues...
  --andrew
ps: further, a way to backup setuid and setgid files without having those
bits set on the backup copies, similar to the hardlinks storage, would be
great... 

pps: and thanks to the author(s) for a nice package, too!