http://blogs.msdn.com/tess/archive/2008/05/07/ntdll-kifastsystemcallret-shareduserdata-systemcallstub-and-search-engines.aspxIf I were to pick out ten keywords for my blog I would pick, in no particular order, ASP.net, windbg, sos, debugging, .net exceptions, memory leaks, performance issues, OutOfMemory exceptions, garbage collection, troubleshooting. Those are the thingssv-SECommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/tess/archive/2008/05/07/ntdll-kifastsystemcallret-shareduserdata-systemcallstub-and-search-engines.aspx#9590878Wed, 06 May 2009 12:47:29 GMT91d46819-8472-40ad-a661-2c78acb4018c:9590878John Whitehouse<p>My call stack looks nothing like yours. My application's UI has stopped updating, the call stack looks like this...</p> <p>ntdll.dll!_KiFastSystemCallRet@0() </p> <p>user32.dll!GetWindowLongA() &nbsp;+ 0x61 </p> <p>user32.dll!SendMessageA() &nbsp;+ 0x49 </p> <p>MFC71.dll!CListCtrl::GetItemText(int nItem=0x00000000, int nSubItem=0x01e144a8)</p> <p>Basically call to the CListCtrl::GetItemText never returned.</p> <p>The nSubItem value should be 1, I'm not sure why the debugger (VS 2003) thinks it is 0x01e144a8.</p> http://blogs.msdn.com/tess/archive/2008/05/07/ntdll-kifastsystemcallret-shareduserdata-systemcallstub-and-search-engines.aspx#9896398Thu, 17 Sep 2009 19:18:56 GMT91d46819-8472-40ad-a661-2c78acb4018c:9896398Charlie Brown<p>I'm one of those weird people with interest in ntdll!kifastsystemcallret, and I can tell you that this phenomena has nothing to do with dumps or debugging. It's related to a drwatson entry in the event log, in which &quot;ntdll!kifastsystemcallret&quot; is the only character string a normal person finds remotely related to human words, so this is what we type in google search. :)</p> <p>If only windows were willing to tell which particular service is failing, instead of babbling about svchost.exe...</p> http://blogs.msdn.com/tess/archive/2008/05/07/ntdll-kifastsystemcallret-shareduserdata-systemcallstub-and-search-engines.aspx#9896692Fri, 18 Sep 2009 10:21:53 GMT91d46819-8472-40ad-a661-2c78acb4018c:9896692Tess<p>Charlie, &nbsp;thanks for the info, very interesting</p>