i have the same problem, usually after a few days of use. i have found that starting xterm from the menu and doing kilall hildon-home seems to help restore functionality. or rebooting i also have powerkernel (46) and cssu edit+ recently i read that hildon-home controls the widgets, and i had the mediaplayer and facebook widgets on my desktop. i removed them yesterday but not enough time has passed to see if one of them was the cause i still have personal ip address widget enabled