This crash is occurring with Mozilla 0.9.4 and is being reported under the ntdll.dll stack signture with offset 0x21e1 (so ntdll.dll + 0x21e1). Here are a couple of different stack traces and the only comments I was able to find in the Talkback data: Count Offset Real Signature ===> 3 ntdll.dll + 0x21e1 (0x77f821e1) c7162460 ===> nsInputStreamTee::TeeSegment Crash date range: 2001-09-18 to 2001-09-21 Min/Max Seconds since last crash: 3330 - 11182 Min/Max Runtime: 3330 - 11182 Keyword List : Count Platform List 3 Windows NT 5.0 build 2195 Count Build Id List 3 2001091311 Stack trace(Frame) ntdll.dll + 0x21e1 (0x77f821e1) nsInputStreamTee::TeeSegment [d:\builds\seamonkey\mozilla\xpcom\io\nsInputStreamTee.cpp line 68] nsInputStreamTee::Read [d:\builds\seamonkey\mozilla\xpcom\io\nsInputStreamTee.cpp line 123] nsExternalAppHandler::OnDataAvailable [d:\builds\seamonkey\mozilla\uriloader\exthandler\nsExternalHelperAppService.cpp line 981] nsDocumentOpenInfo::OnDataAvailable [d:\builds\seamonkey\mozilla\uriloader\base\nsURILoader.cpp line 242] nsStreamListenerTee::OnDataAvailable [d:\builds\seamonkey\mozilla\netwerk\base\src\nsStreamListenerTee.cpp line 57] nsHttpChannel::OnDataAvailable [d:\builds\seamonkey\mozilla\netwerk\protocol\http\src\nsHttpChannel.cpp line 2232] nsOnDataAvailableEvent::HandleEvent [d:\builds\seamonkey\mozilla\netwerk\base\src\nsStreamListenerProxy.cpp line 188] PL_HandleEvent [d:\builds\seamonkey\mozilla\xpcom\threads\plevent.c line 591] PL_ProcessPendingEvents [d:\builds\seamonkey\mozilla\xpcom\threads\plevent.c line 524] nsEventQueueImpl::ProcessPendingEvents [d:\builds\seamonkey\mozilla\xpcom\threads\nsEventQueue.cpp line 375] (35716652) URL: http://slashdot.org/articles/01/09/21/2219209.shtml (35716652) Comments: Closing Mozilla ==================================================================================================== Count Offset Real Signature ===> 2 ntdll.dll + 0x21e1 (0x77f821e1) 52b3a4a6 ===> nsInputStreamTee::TeeSegment Crash date range: 2001-09-22 to 2001-09-22 Min/Max Seconds since last crash: 377 - 21489 Min/Max Runtime: 21489 - 21866 Keyword List : Count Platform List 2 Windows NT 5.0 build 2195 Count Build Id List 2 2001091311 Stack trace(Frame) ntdll.dll + 0x21e1 (0x77f821e1) nsInputStreamTee::TeeSegment [d:\builds\seamonkey\mozilla\xpcom\io\nsInputStreamTee.cpp line 68] nsInputStreamTee::Read [d:\builds\seamonkey\mozilla\xpcom\io\nsInputStreamTee.cpp line 123] nsJPEGDecoder::WriteFrom [d:\builds\seamonkey\mozilla\modules\libpr0n\decoders\jpeg\nsJPEGDecoder.cpp line 222] imgRequest::OnDataAvailable [d:\builds\seamonkey\mozilla\modules\libpr0n\src\imgRequest.cpp line 745] ProxyListener::OnDataAvailable [d:\builds\seamonkey\mozilla\modules\libpr0n\src\imgLoader.cpp line 402] nsStreamListenerTee::OnDataAvailable [d:\builds\seamonkey\mozilla\netwerk\base\src\nsStreamListenerTee.cpp line 57] nsHttpChannel::OnDataAvailable [d:\builds\seamonkey\mozilla\netwerk\protocol\http\src\nsHttpChannel.cpp line 2232] nsOnDataAvailableEvent::HandleEvent [d:\builds\seamonkey\mozilla\netwerk\base\src\nsStreamListenerProxy.cpp line 188] PL_HandleEvent [d:\builds\seamonkey\mozilla\xpcom\threads\plevent.c line 591] PL_ProcessPendingEvents [d:\builds\seamonkey\mozilla\xpcom\threads\plevent.c line 524] nsEventQueueImpl::ProcessPendingEvents [d:\builds\seamonkey\mozilla\xpcom\threads\nsEventQueue.cpp line 375] And there were quite a few incidents with no real stack trace: ==================================================================================================== Count Offset Real Signature ===> 28 ntdll.dll + 0x21e1 (0x77f821e1) 3d292533 ===> Crash date range: 2001-09-18 to 2001-09-21 Min/Max Seconds since last crash: 0 - 32697 Min/Max Runtime: 0 - 128146 Keyword List : Count Platform List 32 Windows NT 5.0 build 2195 Count Build Id List 32 2001091311 Stack trace(Frame) ntdll.dll + 0x21e1 (0x77f821e1) There aren't any user comments or urls for most of these crashes, so hopefully we can figure out what's going on from the stack traces. This is only happening on Win2K according to the Talkback data.

Adding crash, topcrash keywords and M094 [@ ntdll.dll - nsInputStreamTee::TeeSegment] to summary for tracking.

the tee is darin's love.

great! more stack traces :-) *** This bug has been marked as a duplicate of 95179 ***

Verified, stack signature not showing up in trunk, M097, or N621