There’s a really ugly DNS security issue that’s affected pretty much everybody, you need to make sure you’ve patched everything you can. While nobody really knows what the problem is, considering that the domain name system is the Internet’s backbone and if it gets broken, it’s a bad thing.
Thankfully, OpenDNS isn’t susceptible to the attack, so you can use them safely (and encourage your ISPs to patch their DNS servers, too, or at least forward all DNS requests to somebody like OpenDNS until they can patch their BIND implementation). I’ve used OpenDNS for quite a while and have set it up at the office, and it’s worked great.
