Gajim tray icon is always hided in Windows 7
Bug description
Gajim's tray icon in windows 7 is not always shown even though is for gajim's tray icon in windows set "show icon and notification".
Steps to reproduce
Install Gajim 0.13.1 in windows 7, start gajim and set for tray icon in windows "show icon and notification". Close a start gajim again. After few minutes of using gajim is gajim's icon in tray hided.
Software versions
OS version: Windows 7
GTK version: 2.16.5
PyGTK version: 2.12.1