IIS Application pool shutdown

[dannystommen]

I don't know if this is the right place to post, anyway:

Once in a while the application pool of my website has stopped. After taking a look into the Windows logs, I can't see anything in the Application log, only in the System log. First I see 5 warnings, and then an error. The warning is:

"A process serving application pool 'domain.com' suffered a fatal communication error with the Windows Process Activation Service. The process id was '1568'. The data field contains the error number."

. The process id is different for all 5 warnings. Then the error message is

Application pool 'domain.com' is being automatically disabled due to a series of failures in the process(es) serving that application pool.

I had some similar problem in the past, and then I could see the stacktrace that caused the error either in the Application log or the System log. Now I can't find this anywhere.

The only information I have

The warning:

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
 <System>
  <Provider Name="Microsoft-Windows-WAS" Guid="{524B5D04-133C-4A62-8362-64E8EDB9CE40}" EventSourceName="WAS" /> 
  <EventID Qualifiers="32768">5011</EventID> 
  <Version>0</Version> 
  <Level>3</Level> 
  <Task>0</Task> 
  <Opcode>0</Opcode> 
  <Keywords>0x80000000000000</Keywords> 
  <TimeCreated SystemTime="2010-09-14T11:23:23.000Z" /> 
  <EventRecordID>74074</EventRecordID> 
  <Correlation /> 
  <Execution ProcessID="0" ThreadID="0" /> 
  <Channel>System</Channel> 
  <Computer>tcserver10</Computer> 
  <Security /> 
 </System>
 <EventData>
  <Data Name="AppPoolID">data.mytrckr.com</Data> 
  <Data Name="ProcessID">5012</Data> 
  <Binary>6D000780</Binary> 
 </EventData>
</Event>

and the error:

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
 <System>
  <Provider Name="Microsoft-Windows-WAS" Guid="{524B5D04-133C-4A62-8362-64E8EDB9CE40}" EventSourceName="WAS" /> 
  <EventID Qualifiers="49152">5002</EventID> 
  <Version>0</Version> 
  <Level>2</Level> 
  <Task>0</Task> 
  <Opcode>0</Opcode> 
  <Keywords>0x80000000000000</Keywords> 
  <TimeCreated SystemTime="2010-09-14T11:23:23.000Z" /> 
  <EventRecordID>74075</EventRecordID> 
  <Correlation /> 
  <Execution ProcessID="0" ThreadID="0" /> 
  <Channel>System</Channel> 
  <Computer>computername</Computer> 
  <Security /> 
  </System>
 <EventData>
 <Data Name="AppPoolID">damain.com</Data> 
 <Binary /> 
 </EventData>
</Event>

At this moment I don't have any idea what is causing the crash. For as far as I know, everywhere in the code try/catch is implemented.

Any ideas?