I am having the same problem with snapshot #23200 from July 26th 2010.  it fails to download and install pluto-dcerouter and gives error code 100.

EDIT:
Retrying the 3rd time it went with no problems.

I have an ATI tv-wonder VE if memory serves me correct it shows up as a Brooktree bt878 chipset
lspci output

Code:

01:02.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11)
01:02.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11)

lspci -v output

Code:

01:02.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11)
        Subsystem: ATI Technologies Inc Device 0003
        Flags: bus master, medium devsel, latency 64, IRQ 17
        Memory at ff6fe000 (32-bit, prefetchable) [size=4K]
        Capabilities: [44] Vital Product Data <?>
        Capabilities: [4c] Power Management version 2
        Kernel driver in use: bttv
        Kernel modules: bttv

01:02.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11)
        Subsystem: ATI Technologies Inc Device 0003
        Flags: bus master, medium devsel, latency 64, IRQ 10
        Memory at ff6ff000 (32-bit, prefetchable) [size=4K]
        Capabilities: [44] Vital Product Data <?>
        Capabilities: [4c] Power Management version 2

lspci -vn output

Code:

01:02.0 0400: 109e:036e (rev 11)
        Subsystem: 1002:0003
        Flags: bus master, medium devsel, latency 64, IRQ 17
        Memory at ff6fe000 (32-bit, prefetchable) [size=4K]
        Capabilities: [44] Vital Product Data <?>
        Capabilities: [4c] Power Management version 2
        Kernel driver in use: bttv
        Kernel modules: bttv

01:02.1 0480: 109e:0878 (rev 11)
        Subsystem: 1002:0003
        Flags: bus master, medium devsel, latency 64, IRQ 10
        Memory at ff6ff000 (32-bit, prefetchable) [size=4K]
        Capabilities: [44] Vital Product Data <?>
        Capabilities: [4c] Power Management version 2

v4l2-ctl -n output

Code:

ioctl: VIDIOC_ENUMINPUT
        Input   : 0
        Name    : Television
        Type    : 0x00000001
        Audioset: 0x00000001
        Tuner   : 0x00000000
        Standard: 0x0000000000FFBFFF ( PAL NTSC SECAM )
        Status  : 256

        Input   : 1
        Name    : Composite1
        Type    : 0x00000002
        Audioset: 0x00000001
        Tuner   : 0x00000000
        Standard: 0x0000000000FFBFFF ( PAL NTSC SECAM )
        Status  : 0

EDIT:::
ALL IS GOOD EXCEPT SOUND NOW!!!
TYVM MANDINGO

Hope this helps
Pugs