w3wp.exe requested the Runtime to terminate it in an unusual way

Giganews Newsgroups
Subject: w3wp.exe requested the Runtime to terminate it in an unusual way
Posted by:  LenaMsdn08
Date: Fri, 31 Jul 2009

We have a strange problem on our webserver, that has occurred randomly a
couple of times a day this week. The asp.net 2.0 websites stop responding. If
I look in task manager, the w3wp.exe worker process for the asp.net 2.0
application pool has allocated a large amount of memory, about 800MB – 1GB.
If I kill the worker process, the websites start responding again.

I'm trying to find a way to troubleshoot this problem.

There is one error in the eventlog that seems to show up around the time
when the websites stop responding:

Event Type:      Information
Event Source:    Application Popup
Event Category: None
Event ID:          26
Date:                7/31/2009
Time:                1:52:40 PM
User:                N/A
Computer:        JUNO

Description:
Application popup: Microsoft Visual C++ Runtime Library : Runtime Error!

Program: c:\windows\system32\inetsrv\w3wp.exe
This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.

The server is Windows 2003 Web Edition SP2, running IIS 6 and ASP.Net, both
1.1 and 2.0

Any help troubleshooting this problem would be very appreciated!
Lena

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