Is the license on the QtConcurrent files correct? It only has the GPL notice, and lacks the usual
** Licensees holding a valid Qt License Agreement may use this file in
** accordance with the rights, responsibilities and obligations
** contained therein. Please consult your licensing agreement or
** contact sales@trolltech.com if any conditions of this licensing
** agreement are not clear to you.
This means that I as a commercial customer of Qt can't use it on my non-GPL projects.