Software Deployment

I'm experiencing strange problem after the installation of quicktime 6.5.1 by using a script with quicktimeinstaller.ini.

After the installation, quicktime is working fine for administrators in Internet Explorer but other who are simple user experience problems... Internet Explorer frooze each time a quicktime video file is launch from a web page ???

I tryed to add security priviledges in the registry and on the quicktime folder without success...

Any advice ?

Thanks

Francis