ok so i run sonar 4 PE on XP Pro. now once ina blue moon while mixing in sonar the GUI will disapear leaving the actual program running. if i open task manager i will see that sonar is still running in the processes tab but not the applications tab. ending the process will not work. so the next logical step would be to restart the computer, but unfortunately it will not let me. i have to maually turn the computer off then restart. after that everything is fine. (this can not be good to my computer) -does anyone know what the hell is going on or how i can fix this? -thanks in advance.