DVB-T decoding error (1 Viewer)

[Mañana]

MediaPortal Version: 2.0.0.0
Windows Version: Windows XP MCE Rollup 2 (I've got all later updates also)
CPU Type: Intel P4 3.0 GHz s775
HDD: 120GB Seagate (I think) and 250GB Maxtor DiamondMax 10
Memory: 512mb
Motherboard: P5GD1 PRO
Motherboard Chipset: Intel 915P chipset
Motherboard Bios: 1012
Video Card: ATI Radeon X700LE
Video Card Driver: Radeon MCE drivers, version 6.9
Sound Card: Realtek HD Audio ALC861 (integrated on mobo)
Sound Card AC3: Same as above, S/PDIF to external Decoder
Sound Card Driver: V5.10.0.5116
1. TV Card: TechnoTrend Budget T-1500 with CI
1. TV Card Type: DVB-T
1. TV Card Driver: 4.4.10.12
2. TV Card: TechnoTrend Budget T-1500
2. TV Card Type: DVB-T
2. TV Card Driver: 4.4.10.12
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: -
MPEG2 Audio Codec: -
Satelite/CableTV Provider: - (Free to Air)
HTPC Case: Silverstone LC03
Cooling: Some huge passive heatsink
Power Supply: 450w
Remote: MCE v.2
TV: InFocus X1
TV - HTPC Connection: Vga


Well, the problem is that I cannot use TV in MediaPortal. When I try to view TV, it just hangs, and I have to restart the computer. I've tried the filters shown below... (DVD works wonders with Nvidias codecs).

(this one misses the video rendering, but thats because I deleted it =P )

 

[Mañana]

Mybe i should also say that it works wonders in MCE...
Seems really strange to me?