Tested the latest Natty mainline kernel, and the issue is present. There is no needs-upstream-testing tag so leaving as is.
Linux balthasaar 2.6.38-02063808-generic #201106040910 SMP Sat Jun 4 09:13:01 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/814426 Title: Natty Narwhal Crackling Sound To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/814426/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs