@Dave Russell Thanks so much for all the testing you performed!
After a long series of tests, it appears this is not a kernel regression. I believe Dave has a spreadsheet documenting all of the pass fail scenarios, but here is a short list of the tests ruling out the kernel: 2.6.38-13.52 natty kernel in a natty install => Pass 2.6.38-13.52 natty kernel in an oneiric install => Fail 3.0.0-13.22 oneiric kernel in a natty install => Pass 3.0.0-13.22 oneiric kernel in an oneiric install => Fail Since the latest natty and oneiric kernels Pass in a natty environment this indicates an userspace regression from natty to oneiric. The plan is to next investigate network manager as a possible culprit. The first test will be to try the natty networkmanager on oneiric. The difficulty will be resolving any dependency issues. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs