Even when I'm doing nothing at all the JIRA 4.0 dashboard uses 30-40% of my CPU. CPU Load varies with number of active gadgets and is near zero when all gadgets are removed. Changing the focus to another Firefox tab causes the CPU usage to drop to zero.

I've tried this on our local JIRA 4.0 instance and on jira.atlassian.com with the same results. I don't seem to have this problem when using JIRA 4.0 with Internet Explorer 7.0. http://www.google.com/ig does not have this problem.

This is a bit irritating and makes performance on the dashboard seem really sluggish...