Comment 1 for bug 118210

This is a dist-upgrade issue if you upgraded from Edgy to Feisty or if you kept your /home partition, on a clean Feisty install the following GUI dialog is shown after clicking the HPLIP Toolbox menu item: PyQt not installed. GUI not available. Install "python-qt3" with the Synaptic Package Manager (Menu: System -> Administration -> Synaptic Package Manager) or run the command "sudo apt-get install python-qt3" in a terminal window.

Please remove hplip.desktop and/or hp-toolbox.desktop from ~/.local/share/applications/
HPLIP Toolbox is hidden from the menus by default, you need to show it by clicking System > Preferences > Main Menu then select System > Preferences > HPLIP Toolbox.

Since hplip.desktop has NoDisplay=true we will always have to show it in the menus through System > Preferences > Main Menu which creates a copy of the desktop file in ~/.local/share/applications/ with NoDisplay=false.
So this is a bug in hplip, on a dist-upgrade hplip.desktop and hp-toolbox.desktop under ~/.local/share/applications/ should be removed for all users.

A dependency on python-qt3 was not added to hplip because:
1) On a server installation we don't want python-qt3 to be installed.
2) Not everybody has a HP printer and some older HP printer can't use the HPLIP Toolbox, python-qt3 and its dependencies waste 33 MB of installed hard disk space for these people.
3) The space on the desktop/server CD is limited: the python-qt3 package and its dependencies would have to be on the CD.