I'm using latest Gentoo Linux, and all filenames containing Hebrew characters (or any other language other than English, for that matter) have those characters replaced with question marks.
Doesn't matter which filesystem it is (main ext3, windows NTFS, cdrom, etc). Both in console and gui. Wether imported from Windows, or if I rename a file myself.
I do have language support in the kernel, I can read and write Hebrew everywhere, so where's the problem???