Angstrom build hiccups - want to prevent generation of documentation

Hi - I'm creating a new Angstrom build for the Beaglebone, and frequently run into intermittent failures due to the inability to load a docbook file:

validity error : Could not load the external subset "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" - I checked the site and it is indeed flaky in terms of loading that file.

Sometimes it loads, sometimes not. Repeatedly issuing the bitbake eventually succeeds, but I have to monitor the build to do this.

Given that I really have no interest in generating documentation as part of the build process, is there a setting/switch/.bb file edit that would prevent all docs from being generated? I've scoured the Yocto documentation and can't find a mention of this.

Mike