I used to have 4 USB cameras too, with a looot of cables.
But they weren't
very stable, so I switched them to those that they use in CCTVs (with RCA
connections & a quad splitter) & everything is fine now. Well, most of the times.
Sometimes yawcam freezes for no apparent reason but if I restart it it's ok.
Btw, in case you haven't noticed, your cams' IP at your page is your LAN's IP,
we can't watch them.