i have gnome-base/gnome-applets-2.12.1, when i scroll with the mouse over the speaker on the panel, the master volume should be lowered or raised, insted it mutes. if i click on it, i get a scrollbar, which acts the same, if i scroll it, by dragging or scrolling, the mixer mutes. the only way to use the mixer is by opening the volumecontrol itself. so can i use the applet only as a quicklounch icon.
This is fixed in gnome-applets-2.12.2. Upgrade.