What does "gnomevfs-info --slow-mime image.jpg" and "gnomevfs-info image.jpg" say on the topic? Does running "sudo update-mime-database /usr/share/mime" makes a difference? Do you have some .mime to your user directory and installed something with its own mimetype definitions to your dapper?
-- Nautilus is not letting me open .jpg files in Dapper https://launchpad.net/bugs/42992 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs