Installed the new update today and it screwed everything up pretty good. Videos would work, but any kind of activity outside of this, such as dragging my cursor over a link or simple scrolling, would cause it to lock up. I reverted back to 10.1 and this seemed to solve the issues.
Anyone else have any issues with it? If so, reverting will fix it. I'm using Firefox 13.0 btw.
Just an informative post.