Sound applet goes crazy
 

Something wrong happend with my sound applet. It regulates my sound volume on each mouse wheel scrolling, even if applet is not active. What's the reason for this? Recently i didn't make any changes in systems configuration. Tried to create an empty user folder and login there - problem still exists, so it is not a wrong configuration in users folder... what could it be?

What options do you get when you right click the applet ?

I don't know it was, but later my additional mouse buttons started to perform action "Play Next/Prev Sound track", and when system was fine this buttons used to send me to prev/next page in the Internet Browser or in File manager. So, I just recovered my system from backup and it works fine. But what's happened with system is still a mystery for me...
About Applet
Delete from Panel
Move applet
Attach to Panel
But it is now, and what was when I had bug - I can't say exactly, but it seems to me that options were just the same