ntfs-3g seems to have trouble reading files and directories that contain international characters (such as å, ä, ö that we use in Sweden). At first I feared that my ntfs partitions had been corrupted but the files that didn't show with ntfs-3g enabled were there when i booted into WinXP or used the regular (read-only) ntfs drivers.
I'm running Edgy 6.10 and my /etc/fstab is
Could it be something with the nls/umask/gid properties?
UUID=8d95709a-3659-4146-ba87-f400456ef68e / ext3 defaults,errors=remount-ro 0 1
UUID=84179cf2-c4c9-4575-8622-ad108060abd5 /home ext3 defaults 0 2
UUID=260C78260C77EF65 /media/sda1 ntfs-3g defaults,nls=utf8,umask=007,gid=46 0 0
UUID=789C92BE9C9275FA /media/sda5 ntfs-3g defaults,nls=utf8,umask=007,gid=46 0 0