* {{bug|837370}} (js::types::TypeCompartment::addPendingRecompile) continues to be the top concern, backout only reduced volume.
* {{bug|836951}} (nsSecureBrowserUIImpl::MapInternalToExternalState) also still is a concern on Aurora and Nightly, waiting for review on {{bug|840388}}.
* {{bug|744836}} (... nsThread::Dispatch | nsTimerImpl::PostTimerEvent) is rising into the top 10.