I think The Aslum is to blame. That, and D2 has been slowing down lately. People quit everyday, wether it's from frustration, school, their parents, or whatever. Usually they go find a new game to play though.
I can see it too. drax has been in the D2 sections a lot, but not many other people are there. When I first joined it was blistering with activity. It's nearly dead now.

The Asylum doesn't help, most of the people here have been in there for the past few days.
I say D2 is dieing. Slowly but surely, dieing.