Crackling sounds after downloading Avast Free Anti-virus

Hi, I recently switched my anti virus from AVG to Avast and since then I have been receiving crackling noises.

The crackling noises occurs when:

  1. I play a Youtube video or Windows media player
  2. Go on a new webpage/website (It’s worse when I have a youtube video playing and simultaneously going on a new webpage/site or just going on a new webpage in general).

I have disabled most of the security shields and the ones that I have running now are:
File System, Web, Network, Behavior and Script.

In addition, I am definitely sure its Avast causing the problems because when I uninstalled it, the crackling goes away.

I also uninstalled my flashplayer and reinstalled it again to make sure it wasn’t the flashplayer causing the problem. I also checked the sounds/speaker and there’s nothing wrong with them.

Anyone have any idea how to fix this?

Thanks~

How did you remove AVG ?

Ensure all remnants are gone General: Uninstalling a third-party antivirus software - See avast FAQ article, [ur]http://www.avast.com/faq.php?article=AVKB11#artTitle[/url].

No such problem on either my XP Pro or win4 netbook systems.