Dynamic sql and http headers...

We have a web aplication busilt using pl/sql web toolkit - version etc in sig.

It seems that when we do an

execute immediate 'create user...';

some http headers are being generated (a content-type line)

and this is causing problems.

Has anyone else seen this symptom and can advise how to suppress or work around it?

cheers

-- 
jeremy

Oracle 9iR2 
Solaris 8 
Oracle HTTP Server 
mod_plsql