According to Google, Firefox has been slow for some people for several years, if they don’t set “network.dns.disableIPv6” to “true” in “about:config”.
Yup, this issue is still a problem for FireFox users. Mozilla has not decided to “check once” for an IPv6 DNS server and use only IPv4 for a while, like an hour, before checking again.
I may also have this problem on my other machine, which is running Ubuntu 9.04. This is on the Kitchen computer, and when my wife says it’s way too slow in Linux and she’s going to boot back into Windows, I had to find out why.
So when we get IPv6 in our house, I will have to switch back.
Aww, who am I kidding – that will be years from now and my 512MB RAM machine will be long gone.