Problem With Choppy Video Streaming From Pc, After upgrading to nw build (built?) Options

[tadmen]

Help, please
I have noticed I get a choppy video that I stream from my PC after upgrading to the new build. I noticed it first after upgrading it in August (August build) but just thought it was something to do with a computer hickup, etc. but just cannot figure it up.
Symptoms:
The video loads longer then usual and then while playing I can see it loading in chunks (I have X3 so I can see yellow LED flicker and video plays then it goes dead and video stops playing for a moment then it flickers again and it plays and on and on and on)
Things I've tried:
1.Removed traces of my old XBMC (including E:\TDATA\0face008 and E:\UDATA\0face008 folders.
2. Tweaked my XP PC network switch to 100 Full duplex
3. Switched a new network cable to see if it might gone bad... same symptoms
4. Switched Player OSD to NO Cache... same symptoms
5. Switched System settings in XBMC from maximum caching to 0 caching for media playing... same symptoms

It almost seems like there is a bottle neck and the packets are streemed and then they cannot be processed and the xbox waits for them to be pocessed.
I have a front display on the xbox and it says I gave 28 megs of memory anyway.

Help please. I used to watch all sorts of movies with previous builds and enjoyed this feature very much. I can listen to mp3's and watch slides across the network without any problems, can go and fetch internet scripts, etc very fast and then the yellow led just blazes all the time. It seems to just hesitate during my videos.

Thanks a bunch

Tad