Firefox has been taking about a minute to start up each time I load it and was underperforming. Granted I have a fair number of Extensions installed, I still expected more from it. Finally found something to speed things up. Here was the solution:
1.) Go to about:config
2.) Acknolwedge that “I’ll be careful, I promise!”
3.) Type “dns” in the filter box.
4.) Double click on the line network.dns.disableIPv6 to set it to true.
Firefox should be nice and snappy once again.
Hey Thanks Dan, it’s been running slow for me on my Windows XP too, but I did your little trick and it’s snappy again. You’re a genius. Mucho Gracias.
Posted the following on Facebook in regards to this:
Firefox first tries to find a requested URL via IPv6 and then if it can’t find any address drops to IPv4. This setting basically says “don’t request an IPv6 address and just get an IPv4 address”.
You can also speed up the start up of Firefox by setting your “Home Page” to show a blank page.