Installed my Targus bluetooth notebook mouse (a lovely Xmas pressie!) on my Dell notebook - works like a charm and does not require a BT dongle on my notebook (saves a USB port).
But alas, when you restart the notebook, it does not work - at first I removed and re-added the device - what a drag. Then found the answer on Google - all you have to do is click a few mouse buttons and voilá - it reconnects automatically. Obvious in retrospect, I suppose - but dragging the mouse around (which is the really obvious thing to do), does not re-connect the mouse...
So the moral of the story is RTFM (read the f ' ing manual!), or just fiddle around 'til it works!
Happy 2006 all you bloggers!