According to a survey from Internet security vendor Postini, spam traffic increased by 59% from September to November. That explained why Dgroups/Lyris did not function properly early this month. Usually there were 10,000 to 15,000 incoming messages each day before November, and it went up to 30,000 to 37,000. Such a volume killed Lyris. The poor Lyris used up all its energy to deal with incoming messages and slowed down other stuff.