Hey Eddie,
You're not a Jackass, We have one of our PCs with a USB Webcam and 2 USB printers plugged into it.
Before we replaced the second printer for a newer photo printer everything was fine. Whe we installed the new printer the Webcam stopped working. This was a big deal for us because my wife speaks to her daughter and grandsons every week in England. We plugged and uplugged it a dozen times. and nothing worked. We thought the webcam was broken. I installed it on another PC and it was fine. We switched places with the new printer and they both worked, only now our other printer wasn't being found.
So I went back to the PC it belongs on and moved the 2 USB printer cables over to the next USB port. Then I plugged the Webcam into the first USB port and it was recognised right away. It was like musical ports. That same PC has 2 USB ports on the front, where I plug in thumb drives and an external HardDrive for backup. If I reverse the cables neither one works. So one goes into the left and the other into the right.
Before everything became USB I used to plug into any port and things would work, but now that we have more devices than ports the computer has gotten really picky.
I had a powered USB hub and it worked fine until I bought a new scanner. I figured the hub would work well because it was a powered hub and the scanner ran off USB power. Wrong, I had to use a USB port on the PC. The hub is off now and the scanner is on a different PC because the other PC ran out of ports. Who would have thought 6 ports wouldn't be enough.

It has worked out better anyway. The scanner works much better on the core 2 duo, with more RAM and even with my music gear, my music PC is much less cluttered than my wife's. Her computer area is beginning to look like an OfficeMax store. lol

Wayne,