This network card problem (with 8111/8168 chipset) is present in Ubuntu distributions since 10.x for me. However the recent kernel version 3.x also crippled the installation of driver from Realtek site, but I found a workaround on Linux Mint forums:
http://forums.linuxmint.com/viewtopic.php?f=49&t=80757 just replace kernel version with your own, when copying the .ko file. Hope this bug gets fixed soon - just google for "ubuntu realtek 8168 driver problem" you'll see lots of posts :-) (as of yesterday, when i did clean 11.10 install, my network card is still detected as 8169, which then works a bit, but usually drops connection speed really soon, and eventually all network traffics stops) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/839393 Title: Network problem with the driver r8169 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/839393/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs