I don't know why this problem happend, but i don't know how to fix it. When i installed my system (xubuntu 12.10) all was is ok, but once this problem happend. It make tray icons that added by Qt-apps unusable, but with gtk all is ok. Indicator-plugin make icons of qt-apps like volume indicator: i can press it by left mouse button, but it handling like right-button and don't work correctly.

P.S. Sorry for my english. Yes, i know that ubuntu bugs place is launchpad.net, but there no one answer me.