After upgrading my Xubuntu 13.04 to 13.10 I have no sound.

I still have sound if I start VLC with

sudo mpg123 test.mp3

So it seemd there is a right problem

EDIT

after adding myself to the group audio with

adduser myself audio

I could play sounds again from the desktop with VLC

But one problem remaining:

The systray, usually looking like this:

is not working anymore. No audio-settings and no network-manager in the taskbar in XFCE: there is just one small box with nothing in it.

When I install stalonetray, There I see the status of wicd and all the other statuses, so the systray seems to be broken.