Can't open Maemo-DM
 

I installed maemo-statusbar-usbnet following http://maemo.org/community/wiki/usbnetworkingwinxp/. After I reboot the device, I can see there is an applet (Maemo DM) under "Extra" in control panel. But I can't open it. It seems to be hanging. Now, if I tried to open other applets, e.g. Memory, nothing happened as well. Then I closed the control panel and reopen it. Whatever applet (except the Maemo DM) I tried to open last time automatically opened.

Need help.