Well I don't really know what that "some code" should be. I have a few app pools with sites that contain only static .htm not even with javascript or anything in them. And even these app pools caused this random error a few times already. I have sent about 500 error reports with practically...

My setup: IIS7 on Windows Server 2008 Standard x64 ASP.NET feature is installed but not used right now (the error was there before this feature was installed, so don't start there with problem solving) PHP x64 as ISAPI module (also the error was there before this was installed) HTTP Redirect, Logging...