Actions in hal might trigger it, but it's still a problem in the module. Can you please attach /var/log/kern.log, and get a hal debug output, as described on https://wiki.ubuntu.com/DebuggingRemovableDevices?
** Changed in: linux-source-2.6.15 (Ubuntu) Sourcepackagename: hal => linux-source-2.6.15 Status: Unconfirmed => Needs Info -- ohci_hcd driver causes interrupt flood, high load https://launchpad.net/bugs/80539 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs