ASUS F5M - sound problem: buzzing interruptions; artifacts

Hello.

Recently I bought an ASUS F5M-AP035H notebook.

From the beginning I have a strange problem with sound. I don't know what's causing it. It's very annoying and almost paralyzes all sound-related activities, like watching films on the notebook, listening to music or playing games.

The symptoms are mostly technical: when the notebook plays any sounds, longer or shorter, strange 1-2 second interrputions - loud interrupting noises. It's hard to descibe them. Like repeating the last played noise very fast for 2 seconds. And it occurs quite often, like 5 times during 15 minutes of a movie.

What's more - this kind of interruptions occur almost always when I open or close my sound-related files with any program - be it Windows Media Player or AllPlayer of WinAmp.

I thought that this problem is connected with wrong drivers. But I downloaded the most recent from the website, reinstalled them, and nothing helped. Also I reinstalled the newest DirectX and codec pack (K-Lite). Still - the problem occurs.

The problem may be connected with memory, but I don't know how. I've defragmented my disc many times, and it's looking great (Diskeeper shows no problems). Also I cleaned my registry with CCleaner and RegCleaner. No help here also. My running processes list is very short. I've killed all the unnecessary ones. Once also the Splendid process - thinking that it's the cause - but nothing helped.

ALSO I've stumbled upon something VERY strange.

It seems that rebooting (kill & run once again) the ASUS Splendid (ACMON.exe) process helps. After this kind of boot the sound works fine for a long time. But when I hibernate my notebook (close it, and reopen) the sound is again malfunctioning.

This is just weird.

Please help, this is a big problem for me. It disrupts most of leisure things which can be done on my notebook.