Try this. Check your /etc/fstab file and make sure you have option utf8 in it:
Each mount in my fstab likes this:
/dev/sda8 /mnt/relax vfat utf8,gid=0,umask=002,uid=500 0 0
I have the problem with Unicode too. In every KDE applications (Kwrite, Kate, Konsole,...) unicode character like: Ã, í,... cannot be seen correctly. In GNOME applications, everything works well with Unicode. How can I correct the error?