During this time we will be landing the patches listed on this page: https://wiki.mozilla.org/ReleaseEngineering:BuildbotMasterChanges#Upcoming_changes And as mentioned in Alice's previous post we will be unthrottling the rest of the Talos machines. (http://groups.google.com/group/mozilla.dev.planning/msg/402afc2bfd2d65f2). This work is being tracked in https://bugzilla.mozilla.org/show_bug.cgi?id=468680. This will affect all trees: Firefox (mozilla-central), Firefox3.1 (mozilla-1.9.1), Tracemonkey (tracemonkey), and Mobile (mobile-browser). One of these requires a full Buildbot master restart - so expect some spurious burning. We'll do our best to minimize it and get things green ASAP. If there is any reason why we shouldn't go ahead with this please e-mail release@mozilla.com.