basically on e51 gprs via bluetooth works for 2-3 hours and then "hangs" .
Phone has to be restarted for further operation of gprs via Bt.
BTW I have got this bug with
1.widcomm/broadcom BT on win vista laptop made by HP.
2.toshiba BT on win vista laptop made by sony.
3.IVT /Bluesoleil BT on win xp desktop