Not working for me. I long click on teh word Twitter and the whole widget has to be dragged to 'remove'. Then I + and it still doesn't work.
UPDATE: The widget I'm using is linked to Peep, so apparently not the official Twitter widget. Anyway, I finally fixed the problem. I loaded Peep instead of just the Twitter (HTC) widget, then cleared the cache, and voila my widget now works, shows updates.