OT - firefox info

I suspect that I'm the last to know, but did you know that you could type about:config in FireFox's address line? Stumbled over it ref. something else. It appears that it's a good idea to set "network.dns.disableIPv6" to true, to improve net access via some ISP's/hosts. The problem manifests itself by FF not fetching pages on the first attempt. Later Adrian