1. http://starwars.wikia.com/wiki/Anakin_Skywalker%27s_second_lightsaber + 8 other urls so far. 2. Assertion failure: newItem->GetChildren(), at /builds/worker/workspace/build/src/layout/painting/RetainedDisplayListBuilder.cpp:485 #01: RetainedDisplayListBuilder::MergeDisplayLists [layout/painting/RetainedDisplayListBuilder.cpp:549] #02: RetainedDisplayListBuilder::AttemptPartialUpdate [layout/painting/RetainedDisplayListBuilder.cpp:1205] #03: nsLayoutUtils::PaintFrame [layout/base/nsLayoutUtils.cpp:3870] #04: mozilla::PresShell::Paint [layout/base/PresShell.cpp:6447] #05: nsViewManager::ProcessPendingUpdatesPaint [gfx/src/nsRegion.h:75] #06: nsViewManager::ProcessPendingUpdatesForView [view/nsViewManager.cpp:408] #07: nsViewManager::ProcessPendingUpdates [view/nsViewManager.cpp:1099] #08: nsRefreshDriver::Tick [layout/base/nsRefreshDriver.cpp:2062] #09: mozilla::RefreshDriverTimer::TickRefreshDrivers [layout/base/nsRefreshDriver.cpp:312] #10: mozilla::RefreshDriverTimer::Tick [layout/base/nsRefreshDriver.cpp:334] #11: mozilla::VsyncRefreshDriverTimer::RefreshDriverVsyncObserver::TickRefreshDriver [layout/base/nsRefreshDriver.cpp:689] #12: mozilla::VsyncRefreshDriverTimer::RefreshDriverVsyncObserver::NotifyVsync [layout/base/nsRefreshDriver.cpp:591] #13: mozilla::layout::VsyncChild::RecvNotify [layout/ipc/VsyncChild.cpp:71] #14: mozilla::layout::PVsyncChild::OnMessageReceived [s3:gecko-generated-sources:06086093ccb59dd5a99cf8c9f9fb7f4860fd8ddbfd516af5e5b3508be62029679421dcf2abdf6b1c945b6a054050bd403c9574aad49f857cb4a31d3f4cf56b9a/ipc/ipdl/PVsyncChild.cpp::155] #15: mozilla::ipc::MessageChannel::DispatchAsyncMessage [ipc/glue/MessageChannel.h:664] #16: mozilla::ipc::MessageChannel::DispatchMessage [ipc/glue/MessageChannel.cpp:2065]

I'm going to back out bug 1439809 soon, which will fix this.

(In reply to Matt Woodrow (:mattwoodrow) from comment #1) > I'm going to back out bug 1439809 soon, which will fix this. Hey Matt, can we close this bug out post your backout?