I renewed my version of os to v29.1 and now very often whole screen shuts down, and turns on after a while, showing ==BMW== logo, and the cd of map is ejecting very often. What could be the problem? Should i reinstall the os? I downloaded the cd and burned it with nero on 8x speed, and after that i discovered that you should do that in mode2 and speed 2x. Could this be the problem?