I recently got myself a Microsoft Bluetooth notebook mouse which I'm generally very happy with but I'm having a problem which is really driving me around the bend. At random intervals, usually about 5 - 10 minutes apart, the mouse stops responding completely for a period of about 10 - 20 seconds and then resumes again as normal. I get the impression that it's disconnecting and re-pairing.

The machine that I'm using it with is a Dell Inspiron 1520 with built in bluetooth module and I have installed the latest bluetooth drivers which has not helped so I'm at a loss as to what to do next. Does anyone have any ideas as to what might be causing the problem and what I can do to resolve it?