Fix input/output error or find correct webcam driver for icecam2?

[datababy]

I have an icecam2 webcam (ID 0ac8:3420) (Sirius USB 2.0 camera). I run Ubuntu 9.10.

When I plug it in, /var/log/messages shows that uvcvideo has been loaded and has found a uvc 1.00 device.

When I run luvcview, I get the following error message:

SDL information:
Video driver: x11
A window manager is available
Device information:
Device path: /dev/video0
Stream settings:
Frame format: YUYV (MJPG is not supported by device)
Frame size: 352x288 (requested size 640x480 is not supported by device)
Frame rate: 5/1 fps (requested frame rate 30 fps is not supported by device)
Unable to start capture: Input/output error
Error grabbing
Cleanup done. Exiting ...

I have two questions.

1) Apparently, the webcam is being detected. Some communication must be taking place since the computer knows the device's resolution. How do I fix the input/output error? I've tried setting the permissions for /dev/video0 to 777.

2) Most of what I've found via google suggests the gspca driver for this webcam. lsmod | grep gspca shows nothing, so I do not have it loaded. My question is: which gspca driver would I load?

ls of the appropriate kernel driver directory shows:
gspca_conex.ko gspca_pac207.ko gspca_spca506.ko gspca_tv8532.ko
gspca_etoms.ko gspca_pac7311.ko gspca_spca508.ko gspca_vc032x.ko
gspca_finepix.ko gspca_sn9c20x.ko gspca_spca561.ko gspca_zc3xx.ko
gspca_main.ko gspca_sonixb.ko gspca_sq905c.ko m5602
gspca_mars.ko gspca_sonixj.ko gspca_sq905.ko stv06xx
gspca_mr97310a.ko gspca_spca500.ko gspca_stk014.ko
gspca_ov519.ko gspca_spca501.ko gspca_sunplus.ko
gspca_ov534.ko gspca_spca505.ko gspca_t613.ko

As far as I can tell, there is no "main" driver. How do I determine which one applies to my webcam?

Thanks in advance

(BTW, I've already seen the ubuntu webcam page. It hasn't helped.)

[datababy]

Fixed! The problem was USB bandwidth. Can't use the camera through a USB hub.