Realtek Audio Input problem

Hi everybody!

I'm very glad to be talking to you in Tom's Hardware, that I admire so much!

I have an Acer 3100 notebook equipped with realtek audio, that according to Everest is AL883.

Its problem lays on audio input. As I talk a lot with MSN and Skype, it's an irritating problem.

I am talking normally and suddenly the contact stops listening to me and listens an echo of its own voice. I then have to open up volume control dialog (recording section) and change the check box from "microphone volume" to "mix". Done that, the person is able to hear me again. Thirty seconds later he doesn't hear me anymore and I have to back the checkbox to "microphone volume". Half-minute later I have to change AGAIN! And this is the chat, taking turns continuously with the audio input.

I've already used every driver I found for this heck Realtek High Definition Audio. I've already made several clean installations of Windows, but the problem, mysteriously goes on. I use XP SP3.

The point is that on Vista and Windows 7, that I have already used in this machine, the problem simply does not exist.

I'm very grateful for your help.

Royalshape