Iphone 4 and Parrot MKi9100 Bluetooth Car Kit

Hello everyone! Im using my Iphone 4 with Parrot MKi9100 BT Car Kit and im facing 2 problems.Any help would be appreciated! When i connect my Iphone to the car kit via Bluetooth they synchronize just fine and as far as the calling functions are concerned...no problems whatsoever!The only thing going wrong is the following: Having the Iphone connected using BT and using a GPS client at the same time (happened with both TomTom and Navigon) i dont get ANY voice directions from the navigator!?Once i disconnect the mobile from the BT directions work just fine! Moreover,before this phenomenon began i was getting voice directions but they were hard to hear although all my sound settings where almost at max.Also,when gps was cutting the r/cd in order to give me directions through the car's speakers there were about 2 seconds where half the sentence was cut off.For instance,instead of hearing something like "In two hundred meters,turn right" from the gps i was getting "........dred meters,turn right".It was happening every time the gps was trying to cut off the music in order to nav me.Anyone got any idea what to do?