Upgrading to Ubuntu 10.04 and trying to get printing to work must be really frustrating for new Ubuntu users.
I had to deal with 2 bugs:
First was bug #595650 (error message: "Printer 'hp-LaserJet3030' may not be connected") related to package libusb. The fix listed worked for me.
Second was bug #554172 discussed here. Sometimes (but not always) after booting up the printer does not show up in System > Administration > Printing and I am unable to print. Starting CUPS manually by typing "sudo service cups start" in terminal solved the problem.
Upgrading to Ubuntu 10.04 and trying to get printing to work must be really frustrating for new Ubuntu users.
I had to deal with 2 bugs:
First was bug #595650 (error message: "Printer 'hp-LaserJet3030' may not be connected") related to package libusb. The fix listed worked for me.
Second was bug #554172 discussed here. Sometimes (but not always) after booting up the printer does not show up in System > Administration > Printing and I am unable to print. Starting CUPS manually by typing "sudo service cups start" in terminal solved the problem.