Password converts into "?????"

CVS 03rd November 2006

Password from registration with un-English letters converts into question marks.

“Welcome to yourdomain.com forums
Please keep this email for your records. Your account information is as
follows:

----------------------------
Username: България
Password: ??????????2994
----------------------------

Please do not forget your password as it has been encrypted in our
database and we cannot retrieve it for you. However, should you forget
your password you can request a new one which will be activated in the
same way as this account.

Thank you for registering.“