Recent Ubuntu systems (e.g, Maverick) separate out the groff package into "groff" and "groff-base". With our current host dependency list, groff-base gets pulled in, which provides the groff utility. However, a critical groff plugin is missing (s.tmac) which is only provided by the groff package. We actually list the groff package as a requirement when building for RPM-based systems, but it's missing from the Debian-based required package list. So to fix this, please simply add groff to the list of pacakges for Debian-based hosts.
I added this to the Debian-based system package requirement list (example command). I still need to push, and create and send the pull requests.
Done in http://git.yoctoproject.org/cgit.cgi/poky/commit/?id=d3e1e52be1f95e0b3a00d54174e4bed63d565e62
Verified groff package is now listed in the Quick Start Guide on our website.