In September the LSE (London Stock Exchange)'s Windows-based TradElect system brought the market to a standstill for almost an entire day, due to a fault in TradElect. The CEO reported to have immediately decided to put an end to TradElectm that runs on HP ProLiant servers running Windows Server 2003. The TradElect software itself is a custom blend of C# and .NET programs, created by Microsoft and Accenture. On the back-end, it relied on Microsoft SQL Server 2000. Its goal was to maintain sub-ten millisecond response times, real-time system speeds, for stock trades. It never, ever came close to achieving these performance goals. Worse still, the LSE's competition, such as its main rival Chi-X with its MarketPrizm trading platform software, was able to deliver that level of performance and in general it was running rings about TradElect. Three guesses what MarketPrizm runs on and the first two don't count. The answer is Linux.
More info: PC World