I recognize that oovoo recommends using a headset and we're not doing that at the moment. However, my microphone was working fine previous to a full computer reformat. Now, for some reason, I connect fine in an oovoo conversation and while the sound isn't great, it is working. Then, for no apparent reason, my microphone cuts out and the other person can no longer here us. If I flip from window default to logitech in the microphone drop-down, the mic starts working again for a while. Then it cuts out again and I flip back to windows default and it comes back again for a while. Any ideas?