new hosts appearing between 2011-08-15_1500 and 2011-08-15_2000:
toolserver.org
www.hinet.net
www.justice.cz
www.mikrotik.com
www.seriesyonkis.com

hosts disappearing between 2011-08-15_1500 and 2011-08-15_2000:
www.uni-muenchen.de