As you have certainly noticed, the performance on the current platform used to host xwiki.com is inadequate. We have a strong commitment toward providing you the best performance, and this is why we are going to move the platform to a new data center in Netherland (for those looking for an hosting environment, they are very affordable and very professional). We are going to run a new architecture based on a cluster of front-end servers (1 httpd + 2 running JVMs) connected to a very powerful database server.
Read more about the move here