Here are Some Keys Working As of 06/16/2011 For ESET Smart Security and NOD32 Antivirus. These Keys( Combination of Username and Password) Work for both ESET NOD32 Antivirus & ESET Smart Security. Tested ON ESS version 4.2.71.2.
http://exodus.1337x.org/announce
http://genesis.1337x.org:1337/announce
http://tracker.publicbt.com:80/announce
http://tracker.openbittorrent.com:80/announce
udp://tracker.1337x.org:80/announce