Created attachment 509681 [details] sample of process I loaded http://blog.fligtar.com in a tab and immediately started to scroll down quickly using a 2 finger gesture on my touchpad. It started to scroll and then stopped. I tried clicking the scroll bar, switching tabs, switching between Firefox and other apps, but nothing would work. It hung for a couple minutes before I quit. I sampled the process in Activity Monitor... not sure if it will help. I've been told my blog's heavy use of gradients causes performance issues for some people though I've never seen it on my Mac, so not sure if that's related.
This is the Firefox version I'm using: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0b10) Gecko/20100101 Firefox/4.0b10
(In reply to comment #1) > This is the Firefox version I'm using: > Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0b10) Gecko/20100101 > Firefox/4.0b10 Can you please paste the user agent string from about:support and the revision from about:buildconfig?