Got this reloading twitter.com with ToT (r84167). Can't reproduce anymore now, though. [Thread 0xad9ffb70 (LWP 5210) exited] ASSERTION FAILED: !cachedPage || cachedPage->document() == m_frame->document() ../../Source/WebCore/loader/HistoryController.cpp(210) : void WebCore::HistoryController::invalidateCurrentItemCachedPage() Program received signal SIGSEGV, Segmentation fault. 0x00d795a2 in WebCore::HistoryController::invalidateCurrentItemCachedPage (this=0xb7072d0) at ../../Source/WebCore/loader/HistoryController.cpp:210 210 ASSERT(!cachedPage || cachedPage->document() == m_frame->document()); (gdb) bt #0 0x00d795a2 in WebCore::HistoryController::invalidateCurrentItemCachedPage (this=0xb7072d0) at ../../Source/WebCore/loader/HistoryController.cpp:210 #1 0x00d6d9d4 in WebCore::FrameLoader::receivedMainResourceError (this=0xb7071a8, error=..., isComplete=true) at ../../Source/WebCore/loader/FrameLoader.cpp:2861 #2 0x00d96c26 in WebCore::MainResourceLoader::receivedError (this=0xb0d7e90, error=...) at ../../Source/WebCore/loader/MainResourceLoader.cpp:87 #3 0x00d986a4 in WebCore::MainResourceLoader::didFail (this=0xb0d7e90, error=...) at ../../Source/WebCore/loader/MainResourceLoader.cpp:496 #4 0x00da2f64 in WebCore::ResourceLoader::didFail (this=0xb0d7e90, error=...) at ../../Source/WebCore/loader/ResourceLoader.cpp:445 #5 0x00778190 in WebCore::sendRequestCallback (source=0xb11cd140, res=0x8d80888, userData=0x0) at ../../Source/WebCore/platform/network/soup/ResourceHandleSoup.cpp:441 #6 0x036c2d92 in g_simple_async_result_complete (simple=0x8d80888) at gsimpleasyncresult.c:747 #7 0x0342257d in sent_async (source=0x9be21c8, result=0x8d809a0, user_data=0x8d80888) at soup-request-http.c:109 #8 0x03412a15 in wrapper_callback (source_object=0x9be21c8, res=0x8d809a0, user_data=0x8d80888) at soup-http-input-stream.c:539 #9 0x036c2d92 in g_simple_async_result_complete (simple=0x8d809a0) at gsimpleasyncresult.c:747 #10 0x03412c07 in send_async_finished (stream=0x9be21c8) at soup-http-input-stream.c:599 #11 0x0341227e in soup_http_input_stream_finished (msg=0xa47ba78, stream=0x9be21c8) at soup-http-input-stream.c:310 #12 0x037efb88 in g_cclosure_marshal_VOID__VOID (closure=0xb759778, return_value=0x0, n_param_values=1, param_values=0xb560c38, invocation_hint=0xbfffd6ac, marshal_data=0x0) at gmarshal.c:79 #13 0x037d6a2d in g_closure_invoke (closure=0xb759778, return_value=0x0, n_param_values=1, param_values=0xb560c38, invocation_hint=0xbfffd6ac) at gclosure.c:767 #14 0x037ef389 in signal_emit_unlocked_R (node=0x8c98ea0, detail=0, instance=0xa47ba78, emission_return=0x0, instance_and_params=0xb560c38) at gsignal.c:3256 #15 0x037ee6d8 in g_signal_emit_valist (instance=0xa47ba78, signal_id=472, detail=0, var_args=0xbfffd89c "\300\375C\003\220d\202\003\300\375C\003\330\330\377\277\221\251B\003x\272G\n ") at gsignal.c:2987 #16 0x037ee9c4 in g_signal_emit (instance=0xa47ba78, signal_id=472, detail=0) at gsignal.c:3044 #17 0x03416377 in soup_message_finished (msg=0xa47ba78) at soup-message.c:1086 #18 0x0342a991 in process_queue_item (item=0xae5e158, should_prune=0xbfffd8f8, loop=1) at soup-session-async.c:376 #19 0x0342ab19 in run_queue (sa=0x81f5228) at soup-session-async.c:418 #20 0x0342abbd in idle_run_queue (sa=0x81f5228) at soup-session-async.c:441 #21 0x03880572 in g_idle_dispatch (source=0x98d4198, callback=0x342ab80 <idle_run_queue>, user_data=0x81f5228) at gmain.c:4552 #22 0x0387c9d9 in g_main_dispatch (context=0x811ce78) at gmain.c:2447 #23 0x0387dd3d in g_main_context_dispatch (context=0x811ce78) at gmain.c:3020 #24 0x0387e192 in g_main_context_iterate (context=0x811ce78, block=1, dispatch=1, self=0x8112530) at gmain.c:3098 #25 0x0387e8fb in g_main_loop_run (loop=0x8191960) at gmain.c:3306 #26 0x02ec5af9 in gtk_main () at gtkmain.c:1358 #27 0x0806d906 in main (argc=1, argv=0xbfffebf4) at ../../src/ephy-main.c:747 (gdb)