It's been seven years since the release of DAOC, and I'm sad to say that the years haven't been kind to this once illustrious game. Many people would say that DAOC's decline over the years is due mostly to new games coming out, as well as to some of Mythic's game design strategies. There were population imbalances on the servers, newly released classes oftentimes were quite overpowered, and many of the expansions to the game took the game in a totally different direction than the playerbase would have hoped for.
At one point Classic servers were released, which took the game back to the state that it was in before the expansions, and this did draw players back to the game. These servers were at full population for some time, but there were still issues such as population imbalances and overpowered classes. I can't help but think that DAOC would still be going strong if these issues had been addressed in short order.
DAOC in 2008 is essentially dead. The servers are barren, and Mythic's promise to create a new server type, Origins servers, doesn't seem to be coming to fruition. We'll miss you DAOC, it was a great run.