I'm using the latest internal build now, which has fixed the problems I was having previously. But I still have a problem with the gauge animation. My application reads data every few seconds, shows it on a gauge and plots it on a line chart. After a few minutes, the gauge animation gets 'jerky', and the CPU usage of the browser starts increasing. This gets worse the longer the application runs. I don't know whether the problem is with the gauge, the chart, or something I am doing wrong. I have produced a simple test case which uses random data to demonstrate the problem. The jerky animation starts after about 10 minutes and continues to get worse.