Hi Rocael,
I am sure that using nsd7x solves the problem with the special characters. These two-letter strange simbols are coming from the internal UNICODE representation of the stings which was introduced in tcl8. Can you try again to run OpenACS with nsd7 and *make new posting* to you forums. The data already in the database will sill be shown bad, *but* all the new posting will be ok (I think so 😊.
