Tell me about firefox 3.5 tweaks?

Firefox 3.5 is out , and there are some of new tweaks I like to have for it.

Disable add on version checking to enable add-ons which are not compatible with Firefox 3.5:

1. Go to about:config
2. Right click, select New > Boolean and enter extensions.checkCompatibility as the name.
3. Set value to False

This allows you to carry on using extensions while the authors update them. Things may go wrong so be careful using this setting. You can still see which extensions have not been updated in the Add ons Manager as they have an exclamation mark on their icon.

I like Firefox but it is not as fast as it used to be. This is a comprehensive, and even safe guide to optimizing Firefox 3.5 for speedy browsing. For each suggestion, your mileage may vary. Before you proceed,you need to create a new profile.