How can I fix this lag problem that I have with my flash player?

Example: on the homestarrunner site, if I hover the mouse over the "toons" on, it takes about 2 seconds before homestar says "Toons!" It's not only on that website, but many other flash sites have the same lag issue. I currently have the latest flash upgrade, so I don't understand what the problem is. Any advice or tips on how to solve this would be fantastic.