I have released an update (0.0.3) to the Sendfile Patch. This change makes it simpler to determine if the Sendfile Patch is successfully installed for 3rd party code trying to use it. The original write up is here; http://gabbpuy.blogspot.com/2007/03/sendfile-patch-for-zope2.html The updated code can be found here; http://www.zope.org/Members/TheJester/Sendfile%20Patch -- Andrew Milton akm@theinternet.com.au