Am always having problems with my c5 application sound. I bought it some 2 weeks ago, and i used my headset while runing a shmessenger and 2go with their sounds coming frm d headset. When i removed d headset, the applications stoped bring sounds. And i did a format, and the sound returned. Last nite i used d headset again and nw d sound from my applications has seized. I dnt wana do a format again. Plz help?