Hello,
don't know if you saw it yet, I run now YAFU as Boinc project:
http://yafu.dyndns.org/yafu/. I use the original unmodified yafu and gnfs binaries together with the Boinc wrapper.
The project factors composites from
factordb, beginning with C80.
The number of unfactored composites there was already reduced from 250k to 200k in the last weeks.
yoyo