I'm not sure when or why, but this problem seems to be fixed now...
** Changed in: xserver-xorg-input-evdev (Ubuntu)
Status: New = Invalid
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Logitech MX1000 mouse generating XF86Audio* keypress events
https://bugs.launchpad.net/bugs/366428
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** Package changed: xorg (Ubuntu) = xserver-xorg-input-evdev (Ubuntu)
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Logitech MX1000 mouse generating XF86Audio* keypress events
https://bugs.launchpad.net/bugs/366428
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
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ubuntu-bugs