Some people responded to my question asking for more information concerning this error. I'll give it a try.
I have purchased a Philips Vespa Pro Webcam, because it was reccomended for support by the Linux community. Indeed, it has some very detailed information on: http://www.smcc.demon.nl/webcam/ I run Debian 2.2 on a Dell notebook with kernel 2.2.17 so I had to do a bit of work in order to get usb working. I choose the backport patch over the upgrade to 2.4.0-test-something. Followed instructions on: http://www.suse.cz/development/usb-backport/ This all seems to work pretty well, judging from /var/log/messages (i'll list portion of the log below. (Acctually quite nice that a non-programmer like me can find instructions to do things like patching kernels and building modules.) But now we come to the tragic bit: I have built a new module pwc.o for my 2.2.17 kernel (pre-built only exists for 2.2.16 or 2.4.0-test6) according to the instructions. Now I load and it gives me: Oct 3 16:11:37 eme_lap kernel: pwc Philips PCA645/646 + PCVC675/680/690 webcam module version 5.05 PPro (UP) loaded. Oct 3 16:11:37 eme_lap kernel: pwc Also supports Askey VC010 cam. Oct 3 16:11:37 eme_lap kernel: usb.c: registered new driver Philips webcam Oct 3 16:11:37 eme_lap kernel: pwc Philips PCVC680K USB webcam detected. Oct 3 16:11:37 eme_lap kernel: pwc Registered as /dev/video0. Which looks allright to me. Any attempts to access /dev/video or /dev/video0 result in: /dev/video: Operation not permitted Leaves me pretty clue less... Anny suggestions much appreciated. -- Erik van der Meulen <[EMAIL PROTECTED]>

