My astro a50 will send the headset sounds through my microphone even when the microphone is on mute. For exmple if I use the button on the side of the headset my friend on skype will hear the little DUDU sounds that the headset make, or for exmaple if im on low battery the sound will play. Also i tried muting the microphone and the sound still played while they could not hear my voice. I have tried changing microphone and that works! I have also tried changing usb slot and installing new firmare, acctually this started slightly after i installed new firmware. I have also tried reinstalling the drivers. also i noticed that sometimes while charging, the headset will play small beeping noices over skype and also when I have been wearing my headset without any sound at all i would also hear this beeping sounds my self! Any help would be great as this can be some what annoying!