The Chinese Consulate changes a lot for the past twenty years or so. At first it was in an office building. It was small and people were not that friendly. After it moved into its own place, the service were getting better. Sure, some people think the service is bad now but if you compare the service before and now, then you know it improves its service even it is at a slow pace. By the way, before there was no security guard at the gate and it changed for the past few years.
I usaully go there about 10 minutes before it opens the doors. There is no long line-up. I always have my forms and documents ready. The lady only needs couple minutes to check them and asks couple questions. Everytime I spend less then 5 minutes at the window. Last time I was there was Nov. 2008, for me, the service is still good. The line was short. I was in and out in about 10 minutes.