Streaming Video (wmv) keep freezing every 3-5 min for 5-10 sec.

[maverickusa]

TV-Server Version: not installed
MediaPortal Version: 1.0.0.0 RC1
MediaPortal Skin: Blue Two Wide
Windows Version: XP SP3
CPU Type: Intel P4-2.8GHz
HDD: 80GB
Memory: 512MB
Motherboard: Intel D865PERL
Video Card: Nvidia GeForce FX 5200
Video Card Driver: NVIDIA 6.14.11.6921 (12/5/2007)
Sound Card: SoundMAX integrated Digital audio
Sound Card AC3: ??
Sound Card Driver: Analog Devices 5.12.1.5240 (9/1/2004)
1. TV Card: not used
1. TV Card Type: N/A
1. TV Card Driver: N/A
2. TV Card: N/A
2. TV Card Type: N/A
2. TV Card Driver: N/A
3. TV Card: N/A
3. TV Card Type: N/A
3. TV Card Driver: N/A
4. TV Card: N/A
4. TV Card Type: N/A
4. TV Card Driver: N/A
MPEG2 Video Codec: MPV Decoder Filter
MPEG2 Audio Codec: ffdshow Audio Decoder
h.264 Video Codec: ffdshow Video Decoder
Satelite/CableTV Provider: TWC
HTPC Case: Tower
Cooling: Normal, not sure what info is required.
Power Supply: 400
Remote: MCE
TV: Sony Brawia XBR 46" LCD
TV - HTPC Connection: VGA

Hi Experts.
I am bagging for a help. Ready to give up... Fighting for a week now.
Everything is working well, except for streaming video. It keep freezing for 5-10 sec every 5-10 min. After couple hours of watching, becoming even worse. Video is freezing and start moving as a slideshow and audio is going normal.
Tried to run from web using WMP without runnig TMP - issue does not exist. This issue exists only in TMP.
Followed all steps to configure codecs, tried each single available codec, installed latest SVN, installed latest ffdshow, reimaged system, install all updates - no luck.
This is not an Internet connection issue. HTPC connected wired to router. Download Speed is 5902 kbps.

Any help, suggestion will be appreciated. I don't know what to do next! Lost!
HELP, SOS, HELP!!!

Tim.