Blackberry Curve locks up after using cars Bluetooth

This did not used to happen, but in the last few months, whenever I use the phone in the car over the bluetooth, the phone locks up where I cannot press any of the keys. It would still be able to make calls in the car, but once I get out of the car, I cannot use the phone at all.

Does anyone else experience this?

I know I should probably ask on a BlackBerry forum, but I thought I would check here first.