using a bt500 bluetake bluetooth mouse i keep losing the connection, and not being able to connect at all. the bt500 is super cool. i just got a new one because my old one stopped responding to the left button. now it seems like every time i use the mba (also super cool) I have some kind of problem. Often restarting solves it, but that's a pain. also the mba has frozen a number of times which never (or extremely rarely) happened with my mbpro and g4. I'm wondering if they've introduce a glitch into bluetooth. Comments?