A lot of the servers were already upgraded, we're just in the process of hitting ones that haven't been so far. As for recent server performance/stalls/crashing, we've been doing some monitoring over the past week and have made some improvements, and today's patch that's going out right now (310.5) has some additional data-gathering tools enabled for us to identify more of stalls & crashes, so hopefully we'll be able to get some good data and get some more fixes in.