Oh yeah, I've also tried fswebcam, vgrabbj, mplayer, vlc media player, etc, etc. I get errors with all of them. So my guess is that I have v4l2 set up incorrectly, or something like that.
MY COLLECTION: OLPC XO-1/DebXO/LXDE
Mac Mini G4 1.25/OSX 10.4 | HP dv6000/Windows XP
Compaq e500/Damn Small Linux | Various old laptops/Debian/LXDE