First of all, I'm changing the numbering of Deadwood releases. Instead of giving releases numbers, I'm giving them dates. Today's release, deadwood-Q-20080806 (Deadwood snapshot for August 6, 2008) tries to fix the problem with empty packets by having these empty packets detected before they're added to the cache.
This way, the packets shouldn't ever been seen by the resolver using Deadwood.
It can be looked at on the webpage www.maradns.org/deadwood.