Setting status to Confirmed; James Stansell is clearly experiencing the same problem in 5.04 and 5.10 Live Preview.
** Changed in: system-tools-backends (Ubuntu) Status: Unconfirmed => Confirmed -- Modem volume not turned off by AT&FH0M0. https://launchpad.net/bugs/18331 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs