TV stutter in new SNV build?

[Mantis]

MediaPortal Version: 0.2.2.0 SVN: 02-07-2007--01-07-Rev12880
MediaPortal Skin: Blue II
Windows Version: XP SP2
CPU Type: AMD Athlon 64 3200+
HDD: Samsung spinpoint 400GB (media) + Samsung spinpoint 80BG (system)
Memory: 1GB
Motherboard: Shuttle ST20G5
Motherboard Chipset: North: ATi RADEON XPRESS 200 - South: ULi 1573
Motherboard Bios:
Video Card: Nvidia GF 6200
Video Card Driver: Nvidia Forceware 93.71
Sound Card: RealTek ALC880
Sound Card AC3:
Sound Card Driver: Realtek Highdefinition 1.54
1. TV Card: FireDTV-C
1. TV Card Type:
1. TV Card Driver: 3.2 Beta
2. TV Card:
2. TV Card Type:
2. TV Card Driver:
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec: NVIDIA PureVideo Decoder 1.02-223
MPEG2 Audio Codec: NVIDIA PureVideo Decoder 1.02-223
Satelite/CableTV Provider: StofaXtra Denmark
HTPC Case: Shuttle ST20G5
Cooling:
Power Supply:
Remote:
TV: CRT - got my new Pioneer 42" Plasma stolen for xmas
TV - HTPC Connection: S-VHS

I just installed the lates SVN and have the following observations:

1. Changing channels is quicker (took about 15 sec. before and are down to about 7-8)
2. Often when I change channels in fullscreen mode the tv stutters until I switch away from fullscreen tv and press STOP and switch back to fullsreen?

I don't know is this has anything to do with the new build or if its just my system messing with me - had the problem the whole day.

I have attached log files.

Thanks for a great piece of software
Mantis