Web performance book could use examples of slowwwwww Ajax

Andy Oram writes on the O’Reilly editors’ list: “Steve Souders at Yahoo! is writing a book for us on Web performance. The focus of the book is on speeding up downloads and browser behavior. He doesn’t concentrate on Ajax, but some of what he writes is definitely relevant, and he is asking us for get examples of sites where Ajax updates seem to be slow.” That seemed like a good job for Radar readers! Please nominate your candidates, your exercises in frustration, in the comments.