I had not updated the 2010.12 on my laptop by choice since having grief with the disappearing taskbar (subject of a previous Forum enquiry) and paid the price. A new Synaptic app download curdled the install to the point where nothing would open, so I reformatted / and reinstalled the latest 2010.12 .iso and updated it (400Mb) and added the app's the previous install had.
Now that I come to the network printer install, PCC>Hardware>Install Printer is behaving differently now than it used to. It drops to an empty screen with no discovery of the network printer. The previous version would, in a matter of seconds, find no local and one network printer, and proceed with the install. I have checked and task-printing is installed by default. The HP Print Manager can't see the printer, an F2180, either. But historically that's not unusual. What, please, am I missing?