[Samba] charset issue

[juliano]

Hi,

When i restart smbd/nmbd, all the files inside all shares change their 
names.
All the files are affected specially accent portuguese brazilian files. 
File names become a mess in whole samba server.

1) Has anyone seen this kind of samba server behavior?
2) Im using samba 3.0.4, is there a recognized bug? , if i change to 
latest version will this issue be solved?

Any suggestions are highly appreciated, thanks.

Cheers,
Juliano Krieger