Yeah this has been a topic lately, you can probably look down and see a few threads on it. (however I really only speak for LW orange as that where I like to play)
There were a couple of problems as I understand it.
1. The capture system was set at the 50/50 towards the beggining of the map, and virtually no team won a reset.
2. A couple of weekends they were having some server issues where memory or something was running out, system would crash, everyone booted, then it would come back up, for some reason to same map.
3. I think there might have been an additional problem where the weekly resets weren't happening, or if they did, back to the same map.
Anyway thats kind of what I gathered in reading the posts, but I might be wrong about that. Appearantly these items have all been fixed but I don't know