Client hangs watching TV if server has been resumed from sleep (1 Viewer)

[jonm]

TV-Server Version: 1.0
MediaPortal Version: 1.0
MediaPortal Skin: Blue3wide
Windows Version: Vista Ultimate SP1
CPU Type: Intel Core2Duo 2.6Ghz
HDD: Samsung 1Tb
Memory: 2Gb DDR
Motherboard: Asus P5E-VM-HDMI
Video Card: Intel G33
Video Card Driver:
Sound Card:
Sound Card AC3:
Sound Card Driver:
1. TV Card: Blackgold 6-in-1
1. TV Card Type: DVB-S
1. TV Card Driver:
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:
MPEG2 Audio Codec:
h.264 Video Codec:
Satelite/CableTV Provider:
HTPC Case:
Cooling:
Power Supply:
Remote:
TV:
TV - HTPC Connection:

This is rather odd. If my server PC has been resumed from sleep, then attempting to watch TV on a client PC will make MediaPortal hang on the client. The server still works fine. The client works fine if the server is rebooted, I only see the problem if the server has slept/woken. I've attached two sets of logs, one from when the client hangs and one from when the client works OK, can anyone shed any light on what might be happening here? Any help appreciated! Vista Ultimate SP1 on both PCs.