What does it supposed to mean?

Hi
Someone could please help me with these errors messages? What I can do to solve them? Any trick is welcome
Thanks

detalhes
Tipo php
Data Quinta-feira, 4 Maio, 2006 - 13:20
Usuário Admin
Local http://www.avozrc.com/vox/
Referência http://www.avozrc.com/vox/
Mensagem warning: implode(): Bad arguments. em /home/avozrc/public_html/vox/modules/user.module na linha 348.
Severidade erro
Hostname 201.43.223.41

detalhes
Tipo php
Data Quinta-feira, 4 Maio, 2006 - 13:20
Usuário Admin
Local http://www.avozrc.com/vox/
Referência http://www.avozrc.com/vox/
Mensagem user warning: You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1 query: SELECT DISTINCT(p.perm) FROM role r INNER JOIN permission p ON p.rid = r.rid WHERE r.rid IN () em /home/avozrc/public_html/vox/includes/database.mysql.inc na linha 120.
Severidade erro
Hostname 201.43.223.41