No longer withdrawn. I am pretty new to webcams generally and to webcams on skype particularly, so parts of this post could be wrong. But the basic problem, I think, is this:
If I put the pre-load code (LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so) from stretchedthin's earlier video "fix" I can see myself in the little skype video, but the recipient can't see me. If I instead install skype per stretchedthin's video for version 18.104.22.168, the person called can see me, but I can't see myself in the little window.
Doesn't seem to matter whether I use an HP, Logitech or an old "no name" webcam.
I have not installed any driver from the hp or logitech disks.
Anyway, I can see the person I call, and the person I call can see me. I just can't see what the person I am calling sees in the little skype window.