Martin,

>> As several other pointed out, lots of benchmarking has been done,
>> and .NET beats native unmanaged code in almost every test.

A badly implemented algorithm is just that - badly implemented, this is the same misconception that writing everything in assembler will produce the fastest possible code.

Don't get me wrong, I really enjoy dotnet development and I think the technology is cool (ie. the future) but my criteria for using it would not be that it is faster than C++ but that it implements CAS, allows declarative programming etc. etc.

I just don't think you can make that statement unless you implement some very controlled examples.

My .2p

Regards
Neil