I am thrilled to finally see this being planned for Firefox. The ability for the browser and each tab to run as their own process was one of the greatest features of Google Chrome. I know what it is like to have to whole browser shut-down because of one problematic tab. I dealt with this for several weeks last tear and this year with AdBlock and WordPress causing a crash. Also have had this issue with my Thunderbird Blog when entering commonly used words on the title. In those instances, the entire browser shut-down.
Right now this in the early phases and likely won’t be part of Firefox 3.5, but rather Firefox 3.6. From Mozilla Links:
Mozilla has started a new project to make Firefox split in several processes at a time: one running the main user interface (chrome), and another or several others running the web content in each tab. Like Chrome or Internet Explorer 8 which have implemented this behavior to some degree, the main benefit would be the increase of stability: a single tab crash would not take down the whole session with it, as well as performance improvements in multiprocessor systems that are progressively becoming the norm.
The project, which lacks a catchy name like other Mozilla projects (like TaskFox, Ubiquity, or Chocolate Factory) is coordinated by long time Mozillian, Benjamin Smedberg; and also integrated by Joe Drew, Jason Duell, Ben Turner, and Boris Zbarsky in the core team.
Thanks for the tip Claus!