> The second issue is the lack of tab sand-boxing. A fairly large part of my job is testing for edge cases in our products. Our products are JavaScript heavy. I

> The second issue is the lack of tab sand-boxing. A fairly large part of my job is testing for edge cases in our products. Our products are JavaScript heavy. I often find issues which crash the browser... well.. they crash Firefox. In Chrome the tab shows an error in the console and I have the option to close the tab. In Firefox I never get an error in the console. The whole browser freezes and stops responding. Why not simply run two FF instances in parallel (e.g., via the profile manager) - one for actual browsing, and another for testing, that can blow up as often as it "needs" to?