Can't tune to same transponder when recording

[dinky]

MediaPortal Version: 0.2.2.0
MediaPortal Skin: Default
Windows Version: XP SP2
CPU Type: Sempron 3100
HDD: 120Gb
Memory: 512Mb PC2700
Motherboard: DFI Lanparty NF3
Motherboard Chipset: Nforce3
Motherboard Bios:
Video Card: 6100AGP
Video Card Driver: 93.71
Sound Card: Onboard
Sound Card AC3:
Sound Card Driver:
1. TV Card: NOVA-T PCI
1. TV Card Type: DVB-T
1. TV Card Driver:
2. TV Card: NOVA-T 500
2. TV Card Type:
2. TV Card Driver:
3. TV Card: NOVA-T 500
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec: Nero
MPEG2 Audio Codec: MPA
Satelite/CableTV Provider:
HTPC Case: Antec Overture II
Cooling:
Power Supply:
Remote: MCE Remote
TV: Phillips 30" LCD
TV - HTPC Connection: VGA

I attach server logs showing a problem with the TV Server trying to tune to different channels on the same transponder. I am not attaching MediaPortal logs because it wasn't running - I was trying to 'preview' channels in the TV Server program.

Story goes: Card7 is recording on itv2. If I try to tune to a channel on that same transponder it tries to use the same card:

15/03/2007 23:00:50 Controller: card:7 type:DvbT is tuned to same transponder decrypting 1/1 channels
15/03/2007 23:00:50 Controller: card:7 type:DvbT is available priority:1 #users:1 same transponder:True
15/03/2007 23:00:50 card: CardTune 7 stv tv:7:-1

It then fails with a no video/audio error:

15/03/2007 23:00:50 dvbt: Tune:DVBT:tv:ITV stv Freq:682000 ONID:9018 TSID:8209 SID:8273 PMT:100 FTA:True LCN:10000 BandWidth:8
15/03/2007 23:00:50 card2:tv 7 -1
15/03/2007 23:00:50 control1:tv 7 -1

If try and preview a channel on a different transponder it works OK on Card6:

15/03/2007 23:02:02 Controller: card:7 type:DvbT is tuned to different transponder
15/03/2007 23:02:02 card: CardTune 6 Five tv:6:-1
15/03/2007 23:02:02 card:Tune 6 to Five
15/03/2007 23:02:02 card:user:tv:6:-1 tune DVBT:tv:five Five Freq:658000 ONID:9018 TSID:12291 SID:12867 PMT:102 FTA:True LCN:10000 BandWidth:8
15/03/2007 23:02:03 dvbt: Tune:DVBT:tv:five Five Freq:658000 ONID:9018 TSID:12291 SID:12867 PMT:102 FTA:True LCN:10000 BandWidth:8
15/03/2007 23:02:03 dvb:GetNewSubChannel:0 #0

The recording worked fine. As soon as it was finished it let me tune to channels on that transponder.

What's going on? Presumably a fix to this problem would be for TVServer to recognise that despite it thinking it can tune Card7 to the transponder, it actually can't (for whatever reason) and then for it to try Card6 or Card5? Instead while I record on one transponder I can't view any other channel on that transponder, but I can view other channels. That sounds like the complete reverse of the benefit that was intended by multi-channel viewing?

Using TVServer SVN of 10th March. Didn't see this problem in changelogs since then - have I missed something?

Thanks