After upgrading to the 3.5.0-1-generic kernel in quantal, this appears to be resolved. My wireless is now stably associating at n speeds.
** Changed in: linux (Ubuntu) Status: Incomplete => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1015834 Title: Centrino Ultimate-N 6300 wireless connection is unreliable after upgrading to quantal To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1015834/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs