Tone / Sound issue with MX220

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Use any tone / sound function with a MX220 board
2. Compile
3. Upload

What is the expected output? What do you see instead?

I want to play a short "beep" but instead I have an infinite tone. 
The board seems "freeze" 

What version of the product are you using? On what operating system?

Win 7 + x4 rev 857 + Olimex MX220 Pinguino + PIC32 Pinguino 220 as board type 
in IDE

Please provide any additional information below.

I have 2 MX220 boards from Olimex, same bugs on the both board.
Perhaps a PWM problem or clock frequency not properly tuned in driver ? 
As I'm a noob :) it's just a guess.. 

Original issue reported on code.google.com by mat...@gmail.com on 3 Sep 2013 at 1:55