[pwc] Problem: Quickcam Zoom Silver

[Prest Alessandro]

Hi everybody,
I'm experiencing serious problem with this camera (FC5 PPC). I've been 
able to install the driver (pwc 10.0.12 rc1) and /dev/video0 is present.
The problem is that I get errors from all the application I'm trying to use:

- # setpwc -p  => lot of "VIDIO*: Invalid argument"
- # vgrabber   =>  "maybe /dev/video0" is not a v4l device"
- # videodog  =>    "wrong device"

Please help, where is the problem?
I've read about "power_save=1" but it doesn't change. BTW: which file 
tells which modules must be loaded? I would like to put powersave option 
as default..

Thanks in advance!