Thanks for the help with my HP printing situation. In thinking about all this, I forgot to emphasize that I changed laptops at the time I switched to VL 7.
I just tried printing to my home HP LaserJet4 from my new laptop (computer and VL stats below).
Here are details.
I connected it to the usb slot on the left of this laptop (when facing). This is what I have traditionally done as I have the right two usb ports connected to other stuff.
Cups (or whatever) did not find the printer.
I freed up on of the USB ports on the right side of the machine. Cups found the printer.
The usb ports on the left, which work for, say, my mouse, apparently have different specs than the usb ports on the right.
I will try this at the office and if that doesn't also work there, post the forum. Else, my printing problem is solved.