Promode.Org now offers a new version 1.31 of CPMA, Challenge Pro-Mode Arena, described like this: "Partly a maintenance build for 1.30 with a few minor updates to the new NTF gametype, but also the revision and update of most of the netcode tweaks to date. timenudge, the adaptive cg_nudge, xerpClients, the 50ms hack, etc, have now all been combined into a single cvar that basically just does everything for you."