1006 - Viking attacks increased

England
England was haunted by new viking fleets. Not even the winter made the vikings stop plundering, which was unusual as they previously had not looted during the winter.
Iceland
Holmgang was declared illegal in the Icelandic Alting.
The icelandic sagas tells of a duel between Gunnlaugr Serpent-Tongue and Hrafn Onundarson.
Duelling holmgang was way to resolve conflicts, but it was often abused as a means of enrichment.

Normandy

First mention of the roman title Dux for Richard 2.