Don't speak too soon, but the London Stock Exchange's much-anticipated migration of the main Sets market onto its new MillenniumIT platform on Valentines Day appears, at first sight…to be going well.

This will no doubt come as a relief to the London exchange and market-participants alike, following November's outage of Turquoise -- under what at the time were billed by the exchange as "suspicious circumstances" -- just a couple of weeks after its migration to MillenniumIT.