Close VM problem

I have my VM protected with a password. After desktop restart VM asks for password. If you press "Close" in this step VM won't be closed and will be minimized to system tray. Then right click on system tray icon freezes VM.
http://www.vueminder.com/forums/phpBB3/
http://www.vueminder.com/forums/phpBB3/viewtopic.php?f=5&t=2140