London Stock Exchange traders becoming increasingly frustrated at continued data feed problems affecting several large data providers linked to the exchange. Thomson Reuters and Interactive Data have been displaying incorrect or blank pricing data. Even the LSE’s own data service, Proquote, initially experienced problems. LSE and the data vendors say they are working together as engineers scramble to fix the problem. But behind the scenes, sources close to the parties, including the exchange, tell Computerworld UK they are frustrated at the reputational impact of the problems.”]