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They have publicly stated that the system is written in C++ on Suse Linux.

http://www.computerworlduk.com/news/open-source/3260727/lond...

I wouldn't believe 100% in those statements.

True enough. If the statement turns out to be not entirely correct, that would be news.

I suspect that if there is any F# code, it's in a 3rd party system that talks to the stock exchange. There are lots of those due to the nature of an exchange, though they should all talk over the standard FIX protocol.

> I wouldn't believe 100% in those statements.

Why not? What makes you think this is a lie?

They systematically cover the problems and have zero transparency. Never a post-mortem. Like back in January.

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