> anyway, recursion problems are likely to be a problem in .NET 
> / C#, as far as I know currently the only .NET language that 
> can compile and optimize for tail recursion is F#..

Well, I know of at least two others: XSLT and XQuery, as implemented by
Saxon.

Regards,

Michael Kay
http://www.saxonica.com/
http://twitter.com/michaelhkay