I like Firefox but it’s not as fast as it used to be. This is a comprehensive, safe guide to optimizing Firefox 3.5 for speedy browsing. For each suggestion, your mileage may vary. Before you proceed, create a new profile.
Quit Firefox, run “firefox.exe –profilemanager”, and create a new profile to experiment on. Use the new profile as your default only if your performance improves. Only those changes needed from a default installation are mentioned in this guide.