please take a look at this bugreport. https://bugs.launchpad.net/bugs/114171 I think this could be the same problem.
Kernel: 2.6.20-15-generic -- RTL8111/8168B hangs whole PC (r8169) in feisty https://bugs.launchpad.net/bugs/91895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs