I have a problem which I'm not sure whether to put down to the phone
or Address Book (3.0.3 running in 10.2.8). I make a bluetooth
connection to a paired Nokia 3650, but this connection drops after a
couple of minutes.

This is essentially removing the ability to receive SMSs and initiate
answering the phone, as unless the call/message happens to arrive in
the same minute the connection is open the Mac simply doesn't know
anything has happened.

Any clues? I'm using a Powerbook 12", Nokia 3650 and versions of
Address Book and OS X as noted above.

Thanks in advance for any information,