It's just data latency. It can wait.

Actually it can't, 'cos we've been dancing around this issue long enough, and I don't know if I can continue to cover for your (trade position) group anymore, without getting my head bitten off by MO. We've had a dozen latency issues in the last 30 days, and it's starting to feel like there are another dozen waiting for us in coming weeks. And I'm running out of convincing explanations for large PnL swings coming out of nowhere, explanations that don't involve pointing the finger back at your group. But I would have to go there if you continue to put me in this difficult position, with my back against the wall, instead of getting on with a fix, once and for all. I understand trade replication between NYC and London can't be an easy hurdle to get over, but that's no excuse for keeping it an open ended issue, cos I know you well enough to know that you are not comfortable with a culture where we ignore data congestion until they become full-blown crises. And pls no more superficial measures like rerunning the spreadsheets, cos that detour is getting old.