Application crash due to ntdll.dll
<p>one of my C++ multi threaded Application crash due to ntdll.dll . my call stack looks as follows :- </p>

<pre><code>#0 77452AB1 ntdll!RtlCopySid() (C:\Windows\system32\ntdll.dll:??)  
#1 00000000 0x777b3e14 in ??() (??:??)  
#2 00000000 0x00310000 in ??() (??:??)  
#3 00000000 0x00000000 in ??() (??:??)  
</code></pre>

<p>crash behavior is unexpected sometime it crashes twice in a day and sometime it crashes after 4 or 5 working days . application runs 6 hours in a day.   </p>

<p>I am not able to solve this bug , is there anyone who came into such a scenario ???      </p>
