As reported in http://code.google.com/p/chromium/issues/detail?id=110110 Repro steps: (1) Load http://blogs.technet.com/b/markrussinovich/archive/2010/03/31/3322423.aspx (2) Near the top of the page find the link to the author (Mark Russinovich). (3) Hover/unhover over the author's name (may require a few tries) (4) Crash I caught this in the debugger with a debug build (from r107756) on MacOS: ASSERTION FAILED: !node() || documentBeingDestroyed() || !frame()->view() || frame()->view()->layoutRoot() != this /Volumes/development/src/chromium-webkit/src/third_party/WebKit/Source/WebCore/rendering/RenderObject.cpp(216) : virtual WebCore::RenderObject::~RenderObject() 1 0x103024143 WebCore::RenderObject::~RenderObject() 2 0x102f8ce26 WebCore::RenderBoxModelObject::~RenderBoxModelObject() 3 0x102f7e6ba WebCore::RenderBox::~RenderBox() 4 0x102f369ec WebCore::RenderBlock::~RenderBlock() 5 0x10301d163 WebCore::RenderObject::arenaDelete(WebCore::RenderArena*, void*) 6 0x10301d1bf WebCore::RenderObject::destroy() 7 0x102e7b28f WebCore::Node::detach() 8 0x1021333c8 WebCore::ContainerNode::detach() 9 0x1026b3123 WebCore::Element::detach() 10 0x1020cc32b WebCore::Node::reattach() 11 0x1026b2983 WebCore::Element::recalcStyle(WebCore::Node::StyleChange) 12 0x1026b2f68 WebCore::Element::recalcStyle(WebCore::Node::StyleChange) 13 0x1026b2f68 WebCore::Element::recalcStyle(WebCore::Node::StyleChange) 14 0x1026b2f68 WebCore::Element::recalcStyle(WebCore::Node::StyleChange) 15 0x1026b2f68 WebCore::Element::recalcStyle(WebCore::Node::StyleChange) 16 0x1026b2f68 WebCore::Element::recalcStyle(WebCore::Node::StyleChange) 17 0x1026b2f68 WebCore::Element::recalcStyle(WebCore::Node::StyleChange) 18 0x1026b2f68 WebCore::Element::recalcStyle(WebCore::Node::StyleChange) 19 0x1026b2f68 WebCore::Element::recalcStyle(WebCore::Node::StyleChange) 20 0x1026b2f68 WebCore::Element::recalcStyle(WebCore::Node::StyleChange) 21 0x1026b2f68 WebCore::Element::recalcStyle(WebCore::Node::StyleChange) 22 0x1026b2f68 WebCore::Element::recalcStyle(WebCore::Node::StyleChange) 23 0x1026b2f68 WebCore::Element::recalcStyle(WebCore::Node::StyleChange) 24 0x1026b2f68 WebCore::Element::recalcStyle(WebCore::Node::StyleChange) 25 0x1026b2f68 WebCore::Element::recalcStyle(WebCore::Node::StyleChange) 26 0x102345a06 WebCore::Document::recalcStyle(WebCore::Node::StyleChange) 27 0x102346d58 WebCore::Document::updateStyleIfNeeded() 28 0x1023372b2 WebCore::Document::styleRecalcTimerFired(WebCore::Timer<WebCore::Document>*) 29 0x102353953 WebCore::Timer<WebCore::Document>::fired() 30 0x10247031c WebCore::ThreadTimers::sharedTimerFiredInternal() 31 0x10247052f WebCore::ThreadTimers::sharedTimerFired() Program received signal: “EXC_BAD_ACCESS”.