Although you are not using Edgy and you're probably not suffering due to the issue mentioned there, have a look at https://lists.ubuntu.com/archives/ubuntu-devel/2006-November/022684.html if you feel brave enough :)
** Changed in: Ubuntu Sourcepackagename: None => linux-source-2.6.15 Importance: Undecided => Medium ** Summary changed: - The audio is cut when the HD "itches" + The audio is cut on high HD I/O ** Tags added: preempt -- The audio is cut on high HD I/O https://launchpad.net/bugs/73399 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs