Bought my last HP printer

HP is using WSD ports when its networked printers are configured on Windows 7. (There may be more details on this, but this is as much as I've found.)
The trouble is that, for some machines in some environments, the service that resolves these virtual ports into an IP address will often fail and so the print jobs just sit in the queue. Changing the printer port to an IP port fixes the problem. You then have to make sure that your printer is set up with a static IP address.
This is just the latest in a series of problems that I've had with HP printer software. I also Epson and Brother printers; none of them have had anything like the kinds of setup woes that HP has inflicted on me.
In other words, bye-bye, HP.