client-error-request-value-too-long: what does it means?

[Anonymous]

Cups doesn't install my hp photosmart 7660 under slackware 10.0.

This is the error shown after the first page in "add printer"

>>Request Entity Too Large

>>La richiesta è troppo grande per essere eseguita da questo server.

I tried to install it with the printers manager in KDE. When I complete the installation (with the appropriate driver) I receive this message from cups:

>>client-error-request-value-too-long

thanks

Gianni