I experienced the same problem on my Thinkpad X40 : running the 2.6.27 kernel I could ping all hosts on the web, but couldn't wget/curl any of them. Even apt-get update couldn't connect to security.ubuntu.com ! Everything works fine with the 2.6.24 kernel. I tried this at home, I'll try it again at work to see if I can reproduce this strange behavior.
I experienced the same problem on my Thinkpad X40 : running the 2.6.27 kernel I could ping all hosts on the web, but couldn't wget/curl any of them. Even apt-get update couldn't connect to security.ubuntu.com ! Everything works fine with the 2.6.24 kernel. I tried this at home, I'll try it again at work to see if I can reproduce this strange behavior.