Set the height & width of the chart to use percentages and view in IE7.
eg: $chartContainer.updateFusionCharts({height: "100%", width: "100%"});
Then javascript will slow the page down dramatically. Eventually IE will warn the user that script is running slow and give the user an option to stop the script (and in turn kill fusion charts).
Other than writing our own stable code to resize the chart using fixed width / height, is there a fix for this we can use ?