You should not be using WEP it is the most hackable format use WPA2 Personal which is the most secure . IPV6 is not available to ordinary consumers yet but it is true that IPV4 addresses are running out but not for some time yet. I would run Name Bench and see if your DNS server is correct and the fastset available to you . Download Name Bench at www.namebench.com it will take a little while to do its job but the end results will benefit you with a faster internet connection.Make sure you configure your routers firewall as well when you log on to it.