On just one computer in my household, I cannot complete a successful traceroute nor browse in any browser to a seemingly random-selected, small set of websites. This includes sites like twitter.com to my own site, thislooksnice.com, and have yet to find a rhyme or reason. However, I'm able to ping and get a response from them just fine. On my iPod Touch and other computers, I can browse to the sites just fine.
I'm on a Mac running 10.6.7. I can't think of anything I've changed lately that has anything to do with my DNS/network settings. I normally use OpenDNS. I tried disabling it at the chance using my ISPs default DNS servers would fix things, but alas, it did not.
At a total loss at this point since this is a tough one to Google. Any thoughts?
UPDATE: The error I get when trying to traceroute is as follows:
kevin-macbook-pro:~ Kevin$ traceroute twitter.com traceroute: Warning: twitter.com has multiple addresses; using 188.8.131.52 traceroute to twitter.com (184.108.40.206), 64 hops max, 52 byte packets traceroute: sendto: No route to host 1 traceroute: wrote twitter.com 52 chars, ret=-1