f-spot imports files with special characters in names but does not display the photos correctly on restart

Binary package hint: f-spot

Running: ubuntu 8.10, kernel linux 2.5.27-7 generic, GNOME 2.24.1
f-spot:
  Installed: 0.5.0.3-0ubuntu4
  Candidate: 0.5.0.3-0ubuntu4
  Version table:
 *** 0.5.0.3-0ubuntu4 0
        500 http://ca.archive.ubuntu.com intrepid-updates/main Packages
        100 /var/lib/dpkg/status
     0.5.0.3-0ubuntu2 0
        500 http://ca.archive.ubuntu.com intrepid/main Packages

I have JPG image files with names like 2007.03.15#<email address hidden>.
The # and @ characters in the file names cause problems for f-spot, regardless of whether or not I choose to copy the files to the Photos folder on import.

Immediately after import, the images display correctly. After restarting f-spot, the images no longer display correctly.

1. Import files that contain # and @ characters in their filenames.
2. f-spot displays the images no problem.
3. Quit f-spot.
4. Start f-spot.
5. f-spot no longer displays the images: it shows empty boxes in their place.

Looking at the photos table in photos.db I see that the example image name given above shows in the uri column as:
file:///home/paul/Pix/2007.03.15%23022%40italy.rome.yummy.pasta.jpg

I guess the %23 and %40 stored by f-spot's import feature prevent f-spot from loading the images correctly after a restart.