FYI, this new limit seems to be affecting the InstantCommons feature used by many (if not most) external wikis. At appropedia.org we're experiencing many broken images, apparently because we've reached our request limit. This can actually be a good thing because it has forced me to upload to our server some images that were being used many times via templates and that shouldn't have been loaded from Commons in the first place. I just wanted to bring this up because it isn't currently documented at Wikimedia APIs/Rate limits.