There is plenty of evidence against this.
http://groups.google.com/group/alt.g...dd943f456b5897
K. Laisathit:
"only reason you get swarmed is because you
let runners go. As for green aggro problems, well, don't blame
Guk. All post-newbie dungeons have this problem. The critters
have to be utterly green before it becomes non-aggro. Permafrost
has it. Runnyeye has it. Mistmoore has it. Basically, all
level 20+ mobs don't stop being aggro until they are about 10
level below you, even if they are green when they are 6 or 7
levels below you."