What keyboard are you using. The Apple aluminum external BT kb has been absolutely no problem all the way that I have been doing this BTStack thing. It was the mouse that was the pain.
I have noticed that standard Alkaline batteries in the Logitech V470 mouse don't last long (2 weeks), so I have just ordered a set of high-grade NiMh batteries and a charger. That should make the battery issue easier to deal with.
Brian - Sent from my iPad using iPF