From the Dark Age of Camelot: Catacombs expansion website, I read the following tidbit:
“Catacombs marks the first time that Camelot has used dungeon “instancing” where players and groups can adventure in their own private adventuring areas – an entire adventure spawned specifically for you or your group alone. Includes private tasks, private dungeons, and more!
For those play sessions where you don’t have much time, you’ll have your own content. Private Adventuring is available to all levels and dynamically scales in difficulty depending on the makeup of your group!”
Bravo!!! I am going to have to give some serious thought to checking it out, just because they are so smart.