No installation technique seems to work on Feisty Fawn 7.04
on a 64-bit 
Dell Dimension 9200.

I can tell my camera is the first hardware version of the Logitech QuickCam Fusion because
http://mxhaard.free.fr/spca5xx.html
lists the device code as 
0x046d 	0x08c1
and that's the code reported by dmesg, included below.

This page doesn't even include the Fusion:
https://wiki.ubuntu.com/HardwareSupportComponentsMultimediaWebCamerasLogitech

digg this:
http://digg.com/linux_unix/Logitech_gives_Linux_users_the_finger

Results of following instuctions at 
http://ubuntuforums.org/showthread.php?t=194793
and ideas at 
http://ubuntuforums.org/showthread.php?t=205782
http://ubuntuforums.org/showthread.php?t=338373

# uname -r
2.6.20-16-generic

# caminfo
CVideoDeviceInput: Warning: no channel info available.
Detected 1 Video4Linux devices.
Device node      : /dev/video0
Name of device   : "USB Video Class device"
Minimum size     : 48x32
Current size     : 0x0
Maximum size     : 0x0
Video inputs     : 1
 Input 0
  Name             : "(null)"
  Type             : Unknown
  Audio            : no
  Tuners           : 0
Audio inputs     : 0

Last part of the output of dmesg:

[21194.423644] atkbd.c: Unknown key pressed (translated set 2, code 0x9f on isa0060/serio0).
[21194.423650] atkbd.c: Use 'setkeycodes e01f <keycode>' to make it known.
[21194.442091] atkbd.c: Unknown key pressed (translated set 2, code 0xb9 on isa0060/serio0).
[21194.442094] atkbd.c: Use 'setkeycodes e039 <keycode>' to make it known.
[21194.548689] atkbd.c: Unknown key released (translated set 2, code 0x9f on isa0060/serio0).
[21194.548693] atkbd.c: Use 'setkeycodes e01f <keycode>' to make it known.
[21194.684395] atkbd.c: Unknown key released (translated set 2, code 0xb9 on isa0060/serio0).
[21194.684399] atkbd.c: Use 'setkeycodes e039 <keycode>' to make it known.
[80921.699583] usb 6-4: new high speed USB device using ehci_hcd and address 3
[80922.013411] usb 6-4: configuration #1 chosen from 1 choice
[80923.564509] Linux video capture interface: v2.00
[80924.721648] 3:3:3: cannot set freq 16000 to ep 0x86
[80926.722145] usbcore: registered new interface driver snd-usb-audio
[80926.722367] uvcvideo: Found UVC 1.00 device <unnamed> (046d:08c1)
[80926.740419] uvcvideo: Failed to query (135) UVC control 1 (unit 0) : -32 (exp. 26).
[80926.740424] uvcvideo: Failed to initialize the device (-5).
[80926.740608] usbcore: registered new interface driver uvcvideo
[80926.740686] USB Video Class driver (v0.1.0)
[81557.240278] usb 6-4: USB disconnect, address 3
[81561.804369] usb 6-4: new high speed USB device using ehci_hcd and address 4
[81562.114588] usb 6-4: configuration #1 chosen from 1 choice
[81562.114775] uvcvideo: Found UVC 1.00 device <unnamed> (046d:08c1)
[81563.127742] 4:3:3: cannot set freq 16000 to ep 0x86
[83096.829396] uvcvideo: Failed to query (1) UVC control 2 (unit 0) : -32 (exp. 26).
[83096.842248] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -32 (exp. 26).
[83096.846364] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -75 (exp. 26).
[83905.003367] usb 6-4: USB disconnect, address 4
[83967.997179] usb 6-4: new high speed USB device using ehci_hcd and address 5
[83968.307536] usb 6-4: configuration #1 chosen from 1 choice
[83968.307715] uvcvideo: Found UVC 1.00 device <unnamed> (046d:08c1)
[83969.321682] 5:3:3: cannot set freq 16000 to ep 0x86
[83998.253810] uvcvideo: Failed to query (131) UVC control 1 (unit 0) : -32 (exp. 26).
[83998.258433] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -32 (exp. 26).
[83998.556292] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26).
[83998.858895] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26).
[83999.161246] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26).
[83999.458736] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26).
[83999.761090] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26).
[84000.059076] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26).
[84000.356937] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26).
[84000.659416] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26).
[84000.957025] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26).
[84053.056350] 5:3:3: cannot set freq 16000 to ep 0x86
[84104.676876] 5:3:3: cannot set freq 16000 to ep 0x86
[84114.596899] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26).
[84114.899506] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26).
[84115.202107] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26).
[84126.653369] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26).
[84176.617123] 5:3:3: cannot set freq 16000 to ep 0x86
[84190.515793] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26).
[84190.813902] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26).
[84191.116507] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26).
[84200.744283] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26).
[84346.653158] 5:3:3: cannot set freq 16000 to ep 0x86
[84509.820292] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26).


Does anybody forsee a path to a foolproof installation?
This webcam is so common Ubuntu should support it out of the box (some kind of full-auto install, even if it must download something).