Gnucleus 1.7

SuperNodes implemented
Processor usage configurable
Dedicated mode optional
Intelligent file indexing
Scheduler, tell Gnucleus to connect only at certain times during the day
All list boxes redone and enhanced to support dynamic sorting
Changes made to avoid file name conflicts when downloading
New routing mechanism, prevents local loops in network
Multi-Processor support improved
Added X-Try Header to help hosts connect to the network
Pong-Caching system integrated, yet unactivated
Stop button added to search window
Locked the hash table to prevent multi-threading problems
Better fallback method if IRC cache is unavailable

http://www.gnucleus.com/general/download.html