I've got to assume the problem is on the Blackberry and not the TomTom because as far as I'm concerned the BlackBerrry should never disable Bluetooth on its own. Here are the details:

BlackBerry 8130 v4.3.0.66
TomTom RIDER 2

Initially able to transfer all data to the GPS and (when first linked) I am able to make/receive calls on the GPS (ie. the 2 devices initially connect). After approx. 20 minutes the GPS shows that the conneciton to the BB was lost. When I look at the BB it shows Bluetooth Disabled. I thought this strange so later that night I left the Bluetooth enabled on the BB, GPS is off and I am not connected to any Blutooth device, BB never disables the Bluetooth like it does when connected to the TomTom RIDER.

My next test would be to connect to another bluetooth device and see if the same thing happens...unfortunately the GPS is my only Bluetooth device.

Is this a power saving thing (even on full charge it disables)? Is anyone else experiencing the same problem with their TomTom?