Our app uses: ASP.Net, VB.Net, and Microsoft's AJAX implementation. Is there any unmanaged code in there?

The middleware that 开发者_运维知识库manages talk between the mainframe and our app is blowing up randomly. It's a "such and such attempted to read/write protected memory..." error.

The vendor is saying there we must be running some unmanaged code (I feel they're trying to worm out of it). I know VB's entirely managed, but does anyone know about the server portion of AJAX? Is there any server side javascript stuff that occurs before it actually gets into the .NET framework?

Neither the .NET Framework nor its AJAX add-ons contain server-side JavaScript. The .NET Framework does of course contain unmanaged code, and there are rare crashing bugs in it.