Nothing is more irritating than not being able to copy the files you want to a share.
This problem has been bugging me since the release of Mac OS X 10.6.
The fix seems to be quite simple, I added the following to my global block in smb.conf:
dos charset = UTF8
unix charset = UTF8
display charset = UTF8
unix extensions = no
Now we can work without errors again. 🙂
Ps. Don’t forget to unmount and re-mount your share before the changes take effect.