Not us, personally, but game’s online engineer Wilson Venhola who took the time to post a lengthy and comprehensive Q&A regarding the online problems in FIFA 09 and how to solve them. He starts by explaining how the ranking system works, and then goes to the most serious problems, including those related to laggy matched.
So, according to Venhola, there are three reasons why your FIFA 09 online play is so laggy: poor quality service with your Internet provider, opponent’s network connection is bad, connection to game server is bad. He also explains all the problems throughly and offers advice on how to fix them. He also explains how some people can cause lag in a game in order to get an advantage over you. For that and much more, check out the guy’s forum thread in the official EA forums.