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01:06.0 Multimedia video controller [0400]: Conexant CX23880/1/2/3 PCI
Video and Audio Decoder [14f1:8800] (rev 05)
        Subsystem: Conexant Unknown device [14f1:0084]
        Flags: bus master, medium devsel, latency 20, IRQ 18
        Memory at fa000000 (32-bit, non-prefetchable) [size=16M]
        Capabilities: [44] Vital Product Data
        Capabilities: [4c] Power Management version 2

01:06.2 Multimedia controller [0480]: Conexant CX23880/1/2/3 PCI Video
and Audio Decoder [MPEG Port] [14f1:8802] (rev 05)
        Subsystem: Conexant Unknown device [14f1:0084]
        Flags: bus master, medium devsel, latency 64, IRQ 18
        Memory at f9000000 (32-bit, non-prefetchable) [size=16M]
        Capabilities: [4c] Power Management version 2

dmesg

[   23.416140] cx2388x v4l2 driver version 0.0.6 loaded
[   23.416597] CORE cx88[0]: subsystem: 14f1:0084, board: Geniatech
DVB-S [card=52,autodetected]
[   23.416560] ACPI: PCI Interrupt 0000:01:06.0[A] -> Link [APC3] -> GSI
18 (level, low) -> IRQ 18
[   23.565010] cx88[0]/0: found at 0000:01:06.0, rev: 5, irq: 18,
latency: 20, mmio: 0xfa000000
[   23.565063] cx88[0]/0: registered device video0 [v4l2]
[   23.565082] cx88[0]/0: registered device vbi0
[   24.076749] cx2388x cx88-mpeg Driver Manager version 0.0.6 loaded
[   24.904094] cx88[0]/2: cx2388x 8802 Driver Manager
[   24.904119] ACPI: PCI Interrupt 0000:01:06.2[A] -> Link [APC3] -> GSI
18 (level, low) -> IRQ 18
[   24.904125] PCI: Setting latency timer of device 0000:01:06.2 to 64
[   24.904131] cx88[0]/2: found at 0000:01:06.2, rev: 5, irq: 18,
latency: 64, mmio: 0xf9000000
[   25.729842] cx2388x dvb driver version 0.0.6 loaded
[   25.729847] cx8802_register_driver() ->registering driver type=dvb
access=shared
[   25.729851] CORE cx88[0]: subsystem: 14f1:0084, board: Geniatech
DVB-S [card=52]
[   25.729854] cx88[0]/2: cx2388x based dvb card
[   25.921210] DVB: registering new adapter (cx88[0]).
[   25.921216] DVB: registering frontend 1 (Conexant CX24123/CX24109)...

System specs are:

Biostar TF7050-M2 motherboard
AMD BE-2350 CPU
4GB DDR2 800 RAM
320GB Seagate SATAII HDD (160GB partition)
Abit Airpace PCIe Wifi (using ndiswrapper)
Matsushita CW-8123-C Slot DVD (from Apple G4)
PicoPSU-120-WI-25 DC-DC supply
IguanaIR USB transceiver
Twinhan 1020a DVB-S pci card
Geniatech DVB-S Digistar pci card
Nvidia proprietry driver using TV-out (not HDMI) on 576i
Mythbuntu 7.10 (64bit kernel 2.6.22-14-generic)
Fully updated (not upgraded though)
Latest LinuxTV drivers

Anyone have any ideas?  All and any help greatly appreciated.

Cheers
Wayne