repeated loadUrlS calls causes memory leaks

I have a webpage with a flux active x control on it. I'm using it as a test so every 10-15 seconds, I call loadUrlS to load a new 3d model. The issue is that every time the model gets reloaded the memory usage increases so that after using the page for a while, the browser consumes all of my resources. Please advise as this issue needs to be resolved ASAP.