Hey I have noticed some major misconceptions about the speed of the nightly builds of Firefox 3.1 Some reviewers have attempted to compare Firefox 3.1 with other browsers like Chrome and have come up with unexpected results. This is mostly due to the individuals NOT enabling TraceMonkey (the new JavaScript engine) in Firefox 3.1. You HAVE to enable TraceMonkey in order to get the increased speed it provides. Here’s how you do it, courtesy of the Mozilla Wiki:
“Playing with TraceMonkey
TraceMonkey is currently available for testing in nightly builds. You will need to go take the following steps to turn it on:
- open a new tab
- type about:config and hit enter
- read the warning and heed its wisdom
- enter jit in the filter field
- double click on javascript.options.jit.chrome and javascript.options.jit.content to change their values to true
If you experience instability, please file a bug and reference any crash report ID that might be relevant.”











