I've been getting these errors since Symantec Endpoint Protection Manager was installed:
Event Type: Information
Event Source: Application Popup
Event Category: None
Event ID: 26
Date: 11/08/2010
Time: 2:51:05 p.m.
User: N/A
Computer: server.domain
Description:
Application popup: php-cgi.exe - Application Error : The exception unknown software exception (0xc0000005) occurred in the application at location 0x776a8e7c.
Click on OK to terminate the program
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
They show up in the System log as Information, but there are quite a few each day.