Martijn made a little script that measured the time to switch through a bunch of tabs. We should make talos run this and report numbers for it. See bug 385243 and attachment 269215 [details] for the script.
Is this still required? I tried Martijn's script on 3.5b4 and it doesn't seem to work any more. Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.1b4) Gecko/20090423 Firefox/3.5b4
Since the test provided no longer works I'm closing this out.
Moving closed Future bugs into Release Engineering in preparation for removing the Future component.