Difference between Firefox 1.0.x and Firefox 1.1
I live on the edge. At least when it comes to Mozilla. I use a script to download and install the newest nightly build of Mozilla, Mozilla Firefox, Mozilla Thunderbird and Mozilla Sunbird.
With regards to Mozilla Firefox this means that I run the latest trunk build of it. The trunk build has a lot of exiting new stuff in it. Using nightly builds can of cause sometimes result in crash of the browser. But I must mention that I have been downloading and running the latest nightly builds for almost a year now and I never had any data loss.
Sometimes I'm asked what is the difference between Mozilla Firefox 1.0.4 and Mozilla Firefox 1.1. The answer for that question is right here. What's new in Firefox 1.1
One thing I really really like about Mozilla Firefox 1.1 is it's new Extension Manager. The old system with overlay files inside the chrome directory has been removed. Normal users are properly not gonna see the difference but being an extension developer it easies up the installing/upgrading/uninstalling of extensions.