I have used Firefox for years and have been using version 6 for a little while. At the end of August 2011, there was an update to my Firefox. After the update, I am having trouble with the CPU running at 90-100% when I open ANY website. It actually locks the browser down for 5-10 seconds. This even happens within the Firfox support pages. I have tried removing my theme, disabling addons, starting in safe mode, disabling dom.ipc.plugins.enabled, and a few other options I found in the help files. Any other ideas?