A few days ago I blogged about Firefox that keeps on hanging. I guess it was something with the old Firefox. As soon as I updated it stopped hanging. So try updating Firefox and always use the newest version of your software for less errors.
I had some doubts about Firefox a while back but now it seems like Firefox is getting better by the day. Firefox loads way faster now than it used to load. I am not sure if this can be because I dont know software that well but it seems that it loads faster.
The Firefox crashing has stopped. Update those browsers.