I just updated to FF 13 from FF 12 today and ever since I updated, FF has been going extremely slow to do anything. I'm also getting Unresponsive Script error messages regularly, even just browsing the web like normal. These messages shouldn't have to do with the few addons I have installed, as they are all popular addons that are updated regularly and that I had no issues with before updating. Everything was working fine with FF 12 prior to me updating. No error messages or issues with any kind, even across several different profiles. I don't know what the heck you guys did to this, but there is some serious bugs going on or something. Anyone else having issues like this? What can I do? FF has no only slowed my browsing down to a crawl, but it's bogging my whole system down to do anything.