Hello Marco, we have about the same Problem, our Environment is Dephi5 Enterprise, TNT Unicode Edits, DOA 4.0.6, Oracle 10g R1 AL32UTF8, Client Oracle 10g , nls_lang set to GERMAN_GERMANY.WE8MSWIN1252.
German text is saved correctly, Russin Text (kyrillic) is displayed correct, but saved as ?????????.
What is wrong, is this a setting problem or a doa problem?
Beste regards Michael
PS: if i save kyrillic text with Enterprise Manager, it works fine !! so Database seems to be Okay.